Publications

Publications

382 results
2018
Second-Order Optimality Conditions and Improved Convergence Results for Regularization Methods for Cardinality-Constrained Optimization Problems ( and ), In Journal of Optimization Theory and Applications, Springer Nature, volume 178, . [bibtex] [pdf] [doi]
polyDB: A Database for Polytopes and Related Objects (), Chapter in Algorithmic and Experimental Methods in Algebra, Geometry, and Number Theory (Böckle, Gebhard; Decker, Wolfram; Malle, Gunter, eds.), Springer, . [bibtex] [doi]
A Compact Formulation for the $\ell_{2,1}$ Mixed-Norm Minimization Problem (; and ), In Transactions on Signal Processing, volume 66, . [bibtex] [doi]
A Generalized Nash Game for Mobile Edge Computation Offloading (; ; ; and ), In Proceedings - 6th IEEE International Conference on Mobile Cloud Computing, Services, and Engineering, MobileCloud 2018, volume 2018-January, . [bibtex]
Convergence of a Scholtes-type regularization method for cardinality-constrained optimization problems with an application in sparse robust portfolio optimization (; ; and ), In Computational Optimization and Applications, volume 70, . [bibtex]
The Cost of Not Knowing Enough: Mixed-Integer Optimization with Implicit Lipschitz Nonlinearities (; and ), Technical report, Tu Darmstadt, . [bibtex] [pdf]
A Decomposition Method for MINLPs with Lipschitz Continuous Nonlinearities (; and ), In Math. Program., . [bibtex] [doi]
An optimization framework for the computation of time-periodic solutions of partial differential equations ( and ), In Vietnam J. Math., . [bibtex] [doi]
A Priori $L^2$-Discretization Error Estimates for the State in Elliptic Optimization Problems with Pointwise Inequality State Constraints ( and ), In Numer. Math., volume 138, . [bibtex] [doi]
An Optimal Control Problem Governed by a Regularized Phase-field Fracture Propagation Model. Part II The Regularization Limit (; and ), Technical report SPP1962-91, SPP 1962, . [bibtex] [pdf]
A Priori Error Estimates for a Linearized Fracture Control Problem ( and ), Technical report SPP1962-90, SPP 1962, . [bibtex] [pdf]
A Priori Error Estimates for State Constrained Semilinear Parabolic Optimal Control Problems (; and ), In J. Optim. Theory Appl., volume 178, . [bibtex] [doi]
Complexity of minimum irreducible infeasible subsystem covers for flow networks ( and ), In Discrete Applied Mathematics, volume 244, . [bibtex] [doi]
Higher regularity for solutions to elliptic systems in divergence form subject to mixed boundary conditions (; and ), Technical report SPP1962-047, SPP 1962, . [bibtex] [pdf]
On the complexity of instationary gas flows (; and ), In Operations Research Letters, volume 46, . [bibtex] [doi]
The SCIP Optimization Suite 6.0 (; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and ), Technical report, Optimization Online, . [bibtex]
The SCIP Optimization Suite 5.0 (; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and ), Technical report, Optimization Online, . [bibtex]
Branch-and-cut for linear programs with overlapping SOS1 constraints ( and ), In Mathematical Programming Computation, volume 10, . [bibtex] [doi]
A general lower bound for collaborative tree exploration (; ; ; and ), In Theoretical Computer Science, . [bibtex]
The minimum feasible tileset problem (; and ), In Algorithmica, . [bibtex]
Smooth polytopes with negative Ehrhart coefficients (; and ), In Journal of Combinatorial Theory, Series A, volume 160, . [bibtex] [pdf] [doi]
Solving MIPs via scaling-based augmentation (; ; and ), In Discrete Optimization, volume 27, . [bibtex] [doi]
Distance-preserving graph contractions (; ; ; ; and ), In Proceedings of the 9th Innovations in Theoretical Computer Science conference (ITCS), . [bibtex]
A Mixed-Integer Nonlinear Program for the Design of Gearboxes (; ; ; ; and ), In Operations Research Proceedings 2016 (Fink, Andreas; Fügenschuh, Armin; Geiger, Martin Josef, eds.), Springer, . [bibtex] [doi]
Scheduling maintenance jobs in networks (; ; ; ; ; ; and ), In Theoretical Computer Science, . [bibtex]
2017
Adaptive Multilevel Trust-Region Methods for Time-Dependent PDE-Constrained Optimization ( and ), In Portugaliae Mathematica, . [bibtex]
A Multigrid Semismooth Newton Method for Semilinear Contact Problems (; and ), In Journal of Computational Mathematics, . [bibtex]
Computing the Spark of a Matrix ( and ), In Proc. SPARS 2017 (Figueiredo, M\ário A. T.; Plumbley, Mark, eds.), . [bibtex]
GasLib – A Library of Gas Network Instances (; ; ; ; ; ; ; ; ; ; and ), In Data, volume 2, . [bibtex] [doi]
Optimal control of scalar conservation laws by on/off-switching ( and ), In Optimization Methods and Software, volume 0, . [bibtex] [pdf] [doi]
An Optimal Control Problem Governed by a Regularized Phase-Field Fracture Propagation Model (; and ), In SIAM J. Control Optim., volume 55, . [bibtex] [doi]
Optimal Control of the Thermistor Problem in Three Spatial Dimensions, Part 2: Optimality Conditions (; and ), In SIAM J. Control Optim., volume 55, . [bibtex] [pdf] [doi]
Optimal Control of the Thermistor Problem in Three Spatial Dimensions, Part 1: Existence of Optimal Solutions (; and ), Technical report, , . [bibtex] [pdf]
The SCIP Optimization Suite 4.0 (; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and ), Technical report, Optimization Online, . [bibtex] [pdf]
Toric geometry in polymake (; ; and ), In ACM Commun. Comput. Algebra, volume 51, . [bibtex]
Computing convex hulls and counting integer points with \tt polymake (; ; ; ; and ), In Math. Program. Comput., volume 9, . [bibtex] [pdf] [doi]
Optimal $L^2$ Velocity Error Estimates for a Modified Pressure-Robust Crouzeix-Raviart Stokes Element (; and ), In IMA J. Numer. Anal., volume 37, . [bibtex] [doi]
Polytopes Associated with Symmetry Handling ( and ), Technical report, Optimization Online, . [bibtex] [pdf]
The full Keller-Segel model is well-posed on nonsmooth domains (; and ), Technical report, , . [bibtex] [pdf]
Joint active device identification and symbol detection using sparse constraints in massive MIMO systems (; and ), In Proc. 25th European Signal Processing Conference (EUSIPCO), . [bibtex] [doi]
DOpElib: Differential Equations and Optimization Environment; A Goal Oriented Software Library for Solving PDEs and Optimization Problems with PDEs (; and ), In Archive of Numerical Software, volume 5, . [bibtex] [doi]
A Framework for Solving Mixed-Integer Semidefinite Programs (; and ), In Optimization Methods and Software, volume 33, . [bibtex] [doi]
Monoidal Cut Strengthening and Generalized Mixed-Integer Rounding for Disjunctive Programs ( and ), In Operations Research Letters, volume 45, . [bibtex] [doi]
On the Structure of Linear Programs with Overlapping Cardinality Constraints ( and ), Technical report, Optimziation Online, . [bibtex] [pdf]
Numerical optimal control of instationary gas transport with control and state constraints (; and ), Technical report, SFB-TRR 154, . [bibtex] [pdf]
A general lower bound for collaborative tree exploration (; ; ; and ), In Proceedings of the 24th International Colloquium on Structural Information and Communication Complexity (SIROCCO), . [bibtex]
Robust and adaptive search ( and ), In Proceedings of the 34th International Symposium on Theoretical Aspects of Computer Science (STACS), . [bibtex]
Packing a knapsack of unknown capacity (; ; and ), In SIAM Journal on Discrete Mathematics, volume 31, . [bibtex]
Geometric reconstruction problems ( and ), Chapter in Handbook of Discrete and Computational Geometry, Third Edition (Goodman, J.E.; O'Rourke, J.; Tóth, C.D., eds.), CRC Press LLC, . [bibtex]
Tight bounds for online TSP on the line (; ; ; ; ; ; ; and ), In Proceedings of the 28th Annual ACM-SIAM Symposium on Discrete Algorithms (SODA), . [bibtex]
General bounds for incremental maximization (; and ), In Proceedings of the 44th International Colloquium on Automata, Languages, and Programming (ICALP), . [bibtex]
Duality based error estimation in the presence of discontinuities (; and ), Technical report, SFB-TRR 154, . [bibtex] [pdf]
Collaborative delivery with energy-constrained mobile robots (; ; ; ; ; ; and ), In Theoretical Computer Science, . [bibtex]
Energy-efficient delivery by heterogenous mobile agents (; ; ; ; ; and ), In Proceedings of the 34th International Symposium on Theoretical Aspects of Computer Science (STACS), . [bibtex]
Manufacturing Integrated Design - Sheet Metal Product and Process Innovation, (Groche, Peter; Gramlich, Sebastian; Bruder, Enrico, eds.), Springer, . [bibtex]
A holistic topology and shape optimization approach with an application to steel profiles (; ; and ), In Structural and Multidisciplinary Optimization, volume 57, . [bibtex]
Geometry and Topology optimization of Sheet Metal Profiles by Using a Branch-And-Bound Framework (; ; and ), In Materials Science & Engineering Technology, volume 48, . [bibtex]
Scheduling maintenance jobs in networks (; ; ; ; ; ; and ), In Proceedings of the 10th International Conference on Algorithms and Complexity (CIAC), . [bibtex]
2016
A Fast, Massively Parallel Solver for Large, Irregular Pairwise Markov Random Fields (; ; ; ; ; and ), In Proc. High Performance Graphics, . [bibtex]
Decentralized Dynamic Data-driven Monitoring of Atmospheric Dispersion Processes (; ; and ), In Procedia Computer Science, volume 80, . [bibtex] [pdf] [doi]
Hölder-estimates for non-autonomous parabolic problems with rough data ( and ), In Evol. Equ. Control Theory, volume 6, . [bibtex] [pdf] [doi]
Model order reduction techniques with a posteriori error control for nonlinear robust optimization governed by partial differential equations ( and ), In SIAM Journal on Scientific Computing, . [bibtex]
A characterization of irreducible infeasible subsystems in flow networks (; and ), In Networks, volume 68, . [bibtex] [doi]
Multiobjective PDE-Constrained Optimization using the Reduced-Basis Method (; and ), In Adv. Comput. Math., . [bibtex] [doi]
A Polyhedral Investigation of Star Colorings ( and ), In Discrete Applied Mathematics, volume 208, . [bibtex] [pdf]
A Conjugate Direction Method for Linear Systems in Banach Spaces ( and ), In J. Inverse Ill-Posed Probl., . [bibtex] [pdf]
The SCIP Optimization Suite 3.2 (; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and ), Technical report, Zuse Institut Berlin, . [bibtex] [pdf]
Computing Restricted Isometry Constants via Mixed-Integer Semidefinite Programming ( and ), Technical report, Optimization Online, . [bibtex] [pdf]
Fréchet Differentiability of Unsteady Incompressible Navier-Stokes Flow with Respect to Domain Variations of Low Regularity by Using a General Analytical Framework (; ; and ), Technical report, Department of Mathematics, TU Darmstadt, . [bibtex]
Gearbox Design via Mixed-Integer Programming (; ; ; and ), In Proc. VII European Congress on Computational Methods in Applied Sciences and Engineering (Papadrakakis, M.; Papadopoulos, V.; Stefanou, G.; Plevris, V., eds.), . [bibtex] [doi]
Degree-constrained orientations of embedded graphs ( and ), In Journal of Combinatorial Optimization, volume 3, . [bibtex]
Undirected graph exploration with ${\Theta}(\log\log n)$ pebbles (; and ), In Proceedings of the 27th Annual ACM-SIAM Symposium on Discrete Algorithms (SODA), . [bibtex]
Constraint Qualifications and Optimality Conditions of Cardinality-Constrained Optimization Problems (; and ), In Mathematical Programming, volume 160, . [bibtex]
Mathematical Programs with Cardinality Constraints: Reformulation by Complementarity-type Constraints and a Regularization Method (; and ), In SIAM Journal on Optimization, volume 26, . [bibtex] [doi]
Adaptive SQP Method with Reduced Order Models for Optimal Control Problems with Constraints on the State Applied to the Navier-Stokes Equations (), Dr. Hut Verlag, . [bibtex]
Scheduling transfers of resources over time: Towards car-sharing with flexible drop-offs (; ; and ), In Proceedings of the 12th Latin American Theoretical Informatics Symposium (LATIN), . [bibtex]
Collaborative delivery with energy-constrained mobile robots (; ; ; ; ; ; and ), In Proceedings of the 23rd International Colloquium on Structural Information and Communication Complexity (SIROCCO), . [bibtex]
Shape Optimization for Contact Problems based on Isogeometric Analysis ( and ), In Journal of Physics: Conference Series, volume 734, . [bibtex] [pdf]
Manufacturing Integrated Algorithm-Based Product Design: Case Study of a Snap-Fit Fastening (; ; ; and ), In Procedia CIRP, volume 50, . [bibtex]
2015
Robust Truss Topology Design with Beam Elements via Mixed Integer Nonlinear Semidefinite Programming (; ; ; ; and ), In Uncertainty in Mechanical Engineering II, Trans Tech Publications, volume 807, . [bibtex] [doi]
Preconditioners based on "Parareal" time-domain decomposition for time-dependent PDE-constrained optimization (), In Multiple Shooting and time domain decomposition methods (Carraro, T.; Geiger, M.; Körkel, S.; Rannacher, R., eds.), Springer, . [bibtex]
Optimal Control of Nonlinear Hyperbolic Conservation Laws by On/Off-Switching ( and ), Technical report, Department of Mathematics, TU Darmstadt, . [bibtex] [pdf]
On the Computational Intractability of Exact and Approximate Dictionary Learning (), In IEEE Signal Processing Letters, volume 22, . [bibtex]
Optimization approaches for actuator and sensor placement and its application to model predictive control of dynamical systems (), Dr. Hut Verlag, . [bibtex]
Mixed-Integer Nonlinear Programming with Application to Wireless Communication Systems (), Dr. Hut Verlag, . [bibtex]
Validation of nominations in gas network optimization: models, methods, and solutions (; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and ), In Optimization Methods and Software, volume 30, . [bibtex] [doi]
Optimal Control of Hyperbolic Conservation Laws on Bounded Domains with Switching Controls (), Dr. Hut Verlag, . [bibtex]
Methodical Approaches to Describe and Evaluate Uncertainty in the Transmission Behavior of a Sensory Rod (; ; ; ; ; ; ; and ), In Uncertainty in Mechanical Engineering II (Pelz, Peter F.; Groche, Peter, eds.), Trans Tech Publications, volume 807, . [bibtex]
Faces of Birkhoff polytopes (), In Electron. J. Combin., volume 22, . [bibtex]
A Priori Error Estimates for Nonstationary Optimal Control Problems with Gradient State Constraints (; and ), In PAMM, WILEY-VCH Verlag, volume 15, . [bibtex] [doi]
Solving Basis Pursuit: Heuristic Optimality Check and Solver Comparison (; and ), In ACM Transactions on Mathematical Software, volume 41, . [bibtex] [doi]
Parameter identification for nonlinear elliptic-parabolic systems with application in lithium-ion battery modeling ( and ), In Computational Optimization and Applications, volume 62, . [bibtex]
Optimality conditions and POD a-posteriori error estimates for a semilinear parabolic optimal control (; and ), Technical report 345, , . [bibtex]
Optimal Control of Deep Drawing Processes based on Reduced Order Models (), Dr. Hut Verlag, . [bibtex]
Evaluating gas network capacities (; ; and ), SIAM, . [bibtex]
Optimal Boundary Control of Nonlinear Hyperbolic Conservation Laws with Switched Boundary Data ( and ), In SIAM J. Control Optim., volume 53, . [bibtex] [pdf] [doi]
The Damped Crank-Nicolson Time-Marching Scheme for the Adaptive Solution of the Black-Scholes Equation (; and ), In J. Comput. Finance, volume 18, . [bibtex] [doi]
Robust Truss Topology Design with Beam Elements via Mixed Integer Nonlinear Semidefinite Programming (; ; ; ; and ), In Uncertainty in Mechanical Engineering II (Pelz, Peter F.; Groche, Peter, eds.), Trans Tech Publications, volume 807, . [bibtex]
Centralized ensemble-based trajectory planning of cooperating sensors for estimating atmospheric dispersion processes (; and ), In Dynamic Data-Driven Environmental Systems Science: First International Conference, DyDESS 2014, Cambridge, MA, USA, November 5–7, 2014, Revised Selected Papers (Ravela, S.; Sandu, A., eds.), Springer, . [bibtex]
The simplex algorithm is NP-mighty ( and ), In Proceedings of the 26th ACM-SIAM Symposium on Discrete Algorithms (SODA), . [bibtex]
Max shortest path for imprecise points (; and ), In Proceedings of the 30th European Workshop on Computational Geometry (EuroCG), . [bibtex]
Scheduling bidirectional traffic on a path (; and ), In Proceedings of the 42nd International Colloquium on Automata, Languages, and Programming (ICALP), . [bibtex]
Improving the ${H}_k$-Bound on the price of stability in undirected shapley network design games (; ; and ), In Theoretical Computer Science, volume 562, . [bibtex]
Fast collaborative graph exploration (; ; ; and ), In Information and Computation, volume 243, . [bibtex]
Mapping simple polygons: The power of telling convex from reflex (; ; ; and ), In ACM Transactions on Algorithms, volume 11, . [bibtex]
The Price of Inexactness: Convergence Properties of Relaxation Methods for Mathematical Programs with Equilibrium Constraints Revisited ( and ), In Mathematics of Operations Research, volume 40, . [bibtex]
On a Reformulation of Mathematical Programs with Cardinality Constraints (; and ), Chapter in Advances in Global Optimization (Gao, David; Ruan, Ning; Xing, Wenxun, eds.), Springer International Publishing, . [bibtex]
Interval selection on unrelated machines (; ; ; and ), In Proceedings of the 12th Workshop on Models and Algorithms for Planning and Scheduling Problems (MAPSP), . [bibtex]
Time-varying process control for stringer sheet forming by a deterministic derivative-free optimization approach (; ; and ), In The International Journal of Advanced Manufacturing Technology, Springer London, . [bibtex] [doi]
Model order reduction approaches for the optimal design of permanent magnets in electro-magnetic machines (; ; and ), In IFAC-PapersOnLine, volume 48, . [bibtex]
Finitely many smooth d-polytopes with n lattice points (; ; ; ; ; and ), In Israel Journal of Mathematics, The Hebrew University Magnes Press, . [bibtex] [pdf] [doi]
2014
Geometry Optimization of Branched Sheet Metal Structures with a Globalization Strategy by Adaptive Cubic Regularization (), PhD thesis, TU Darmstadt, . [bibtex]
Profiloptimierung im Rahmen eines durchgängigen Produktentstehungsprozesses (; ; and ), Chapter in Tagungsband 5. Zwischenkolloquium Sonderforschungsbereich 666 (Groche, Peter, ed.), Meisenbach Verlag, . [bibtex]
Optimierungsverfahren zur optimalen Steuerung von Tiefziehprozessen basierend auf reduzierten Modellen ( and ), Chapter in Tagungsband 5. Zwischenkolloquium Sonderforschungsbereich 666 (Groche, Peter, ed.), Meisenbach Verlag, . [bibtex]
Smooth Fano Polytopes With Many Vertices (; and ), In Discr. Comp. Geom., volume 52, . [bibtex] [pdf] [doi]
Existence of unimodular triangulations - positive results (; ; and ), . [bibtex] [pdf]
The Computational Complexity of the Restricted Isometry Property, the Nullspace Property, and Related Concepts in Compressed Sensing ( and ), In IEEE Transactions on Information Theory, volume 60, . [bibtex]
Projection onto the Cosparse Set is NP-hard (; and ), In ICASSP 2014 Proceedings, . [bibtex]
Operator Preconditioning for a Class of Inequality Constrained Optimal Control Problems ( and ), In SIAM J. Optim., volume to appear, . [bibtex]
Optimal Control of Nonlinear Hyperbolic Conservation Laws with Switching (; and ), Chapter in Trends in PDE Constrained Optimization, Springer International Publishing, volume 165, . [bibtex] [pdf] [doi]
OPTPDE: A Collection of Problems in PDE-Constrained Optimization (; ; and ), Chapter in Trends in PDE Constrained Optimization (Leugering, Günter; Benner, Peter; Engell, Sebastian; Griewank, Andreas; Harbrecht, Helmut; Hinze, Michael; Rannacher, Rolf; Ulbrich, Stefan, eds.), Springer International Publishing, volume 165, . [bibtex] [doi]
On the equality case in Ehrhart's volume conjecture ( and ), In Adv. Geom., volume 14, . [bibtex] [pdf] [doi]
Polyhedral adjunction theory (; ; and ), In Algebra Number Theory, volume 7, . [bibtex] [pdf] [doi]
An Infeasible-Point Subgradient Method Using Adaptive Approximate Projections (; and ), In Computational Optimization and Applications, volume 57, . [bibtex]
Convergence Properties of the Inexact Lin-Fukushima Relaxation Method for Mathematical Programs with Equilibrium Constraints ( and ), In Computational Optimization and Applications, volume 59, . [bibtex]
Optimal Flow Control Based on POD and MPC and an Application to the Cancellation of Tollmien-Schlichting Waves ( and ), In Optimization Methods and Software, volume DOI 10.1080/10556788.2013.858157, . [bibtex]
Lottery versus All-Pay Auction Contests: A Revenue Dominance Theorem (; ; and ), In Games and Economic Behavior, volume 83, . [bibtex]
Rectilinear shortest path and rectilinear minimum spanning tree with neighborhoods (; ; and ), In Proceedings of the International Symposium on Combinatorial Optimization (ISCO), . [bibtex]
Packing a knapsack of unknown capacity (; ; and ), In Proceedings of the 31st Symposium on Theoretical Aspects of Computer Science (STACS), . [bibtex]
The minimum feasible tileset problem (; and ), In Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA), . [bibtex]
Mapping a polygon with holes using a compass (; ; and ), In Theoretical Computer Science, volume 553, . [bibtex]
On a Fully Adaptive SQP Method for PDAE-Constrained Optimal Control Problems with Control and State Constraints (; ; ; ; and ), Technical report, Technische Universität Darmstadt, . [bibtex]
Polytopes associated to Dihedral Groups (; ; and ), In Ars Math. Contemp., volume 7, . [bibtex]
2013
Finiteness of the Polyhedral $\mathbf Q$-Codegree Spectrum (), . [bibtex]
Adaptive multilevel inexact SQP-methods for PDE-constrained optimization with control constraints (), In SIAM J. Optim., volume 23, . [bibtex] [pdf] [doi]
A Multigrid Semismooth Newton Method for Contact Problems in Linear Elasticity (; and ), Technical report, Technische Universität Darmstadt, . [bibtex]
Computational Aspects of Compressed Sensing (), PhD thesis, TU Darmstadt, . [bibtex]
Theoretical and numerical comparison of relaxation methods for mathematical programs with complementarity constraints (; and ), In Mathematical Programming, volume 137, . [bibtex]
Effort maximization in asymmetric contest games with heterogeneous contestants (; ; and ), In Economic Theory, volume 52, . [bibtex]
Effort maximization in asymmetric contest games with heterogeneous contestants (; ; and ), In Economic Theory, volume 52, . [bibtex]
A new regularization method for mathematical programs with complementarity constraints with strong convergence properties ( and ), In SIAM Journal on Optimization, volume 23, . [bibtex]
A Discrete Adjoint Approach for the Optimization of Unsteady Turbulent Flows ( and ), In Flow, Turbulence and Combustion, volume 90, . [bibtex]
Progress in Academic Computational Integer Programming (; and ), Chapter in Facets of Combinatorial Optimization (Jünger, Michael; Reinelt, Gerhard, eds.), Springer-Verlag, . [bibtex]
An inexact l1 penalty SQP algorithm for PDE-constrained optimization with an application to shape optimization in linear elasticity ( and ), In Optimization Methods and Software, volume 28, . [bibtex]
Computing the bounded subcomplex of an unbounded polyhedron (; and ), In Computational Geometry, volume 46, . [bibtex]
Improving the ${H}_k$-bound on the price of stability in undirected Shapley network design games (; ; and ), In Proceedings of the 8th International Conference on Algorithms and Complexity (CIAC), . [bibtex]
Fast collaborative graph exploration (; ; ; and ), In Proceedings of the 40th International Colloquium on Automata, Languages and Programming (ICALP), . [bibtex]
A heuristic and an exact method for the gate matrix connection cost minimization problem (; ; ; ; and ), In International Transactions in Operational Research, volume 20, . [bibtex] [doi]
Mapping simple polygons: How robots benefit from looking back (; ; ; and ), In Algorithmica, volume 65, . [bibtex]
Simple agents learn to find their way: an introduction on mapping polygons (; ; ; and ), In Discrete Applied Mathematics, volume 161, . [bibtex]
Interval selection with machine-dependent intervals (; ; and ), In Proceedings of the 13th International Algorithms and Data Structures Symposium (WADS), . [bibtex]
Polygon-constrained motion planning problems (; ; ; ; and ), In Proceedings of the 9th International Symposium on Algorithms for Sensor Systems, Wireless Ad Hoc Networks and Autonomous Mobile Entities (ALGOSENSORS), . [bibtex]
2012
Geometry Optimization of Branched Sheet Metal Products (; and ), In PAMM, Wiley-VCH, volume 1, . [bibtex]
Flächige Bauteile mit verzweigtem Querschnitt durch integrierte Spaltbiege-, HSC-Fräs- und Tiefziehprozesse (; and ), In 8. Fachtagung Walzprofilieren und 4. Zwischenkolloquium SFB 666 (Groche, Peter, ed.), . [bibtex]
Ableitungsfreie Optimierungsverfahren für die optimale Steuerung von wirkmedienbasierten Tiefziehprozessen ( and ), Chapter in Tagungsband 4. Zwischenkolloquium Sonderforschungsbereich 666 (Groche, Peter, ed.), Meisenbach Verlag, . [bibtex]
Optimierung der Geometrie und Topologie flächiger verzweigter Blechbauteile und von Mehrkammerprofilen (; ; ; and ), Chapter in Tagungsband 4. Zwischenkolloquium Sonderforschungsbereich 666 (Groche, Peter, ed.), Meisenbach Verlag, . [bibtex]
Defect polytopes and coun\-ter-ex\-amp\-les with polymake ( and ), In ACM Commun. Comput. Algebra, ACM, volume 45, . [bibtex] [doi]
Control of Uncertainties in Metal Forming by Applications of Higher Flexibility Dimensions (; ; ; ; and ), In Applied Mechanics and Materials, Trans Tech Publ, volume 104, . [bibtex]
Permutation Polytopes of Cyclic Groups (; ; and ), In Proceedings of FPSAC 2012, DMTCS, . [bibtex] [pdf]
An object-oriented information model for the representation of free form sheet metal parts in integral style (; ; ; and ), In Tools and Methods of Competitive Engineering, Faculty of Industrial DesEngineering, . [bibtex]
Nonlinear optimization. (Nichtlineare Optimierung.) (), Basel: Birkhäuser, . [bibtex]
Mathematical programs with vanishing constraints: A new regularization approach with strong convergence properties (; and ), In Optimization, volume 61, . [bibtex]
Constrained optimization and optimal control for partial differential equations., (Ulbrich, Günter Leugering; Sebastian Engell; Andreas Griewank; Michael Hinze; Rolf Rannacher; Volker Schulz; Michael; Ulbrich, Stefan, eds.), Basel: Birkhäuser, . [bibtex] [doi]
Integration of manufacturing-induced properties in product design (; ; ; ; and ), In CIRP Annals - Manufacturing Technology, volume 61, . [bibtex]
Potenziale einer durchgängigen Produktentstehung - Nutzung technologieinduzierter Eigenschaften zur Entwicklung von Blechstrukturen (; ; ; ; ; ; and ), In Konstruktion, . [bibtex]
Subgradient based outer approximation for mixed integer second order cone programming. (), Chapter in Mixed integer nonlinear programming. Selected papers based on the presentations at the IMA workshop mixed-integer nonlinear optimization: Algorithmic advances and applications, Minneapolis, MN, USA, November 17–21, 2008, New York, NY: Springer, . [bibtex] [doi]
Mapping polygons with agents that measure angles (; and ), In Proceedings of the 10th International Workshop on the Algorithmic Foundations of Robotics (WAFR), . [bibtex]
Degree-constrained orientations of embedded graphs ( and ), In Proceedings of the 23rd International Symposium on Algorithms and Computation (ISAAC), . [bibtex]
Mapping a polygon with holes using a compass (; ; and ), In Proceedings of the 8th International Symposium on Algorithms for Sensor Systems, Wireless Ad Hoc Networks and Autonomous Mobile Entities (ALGOSENSORS), . [bibtex]
Constrained Optimization and Optimal Control for Partial Differential Equations (; ; and ), Chapter in Generalized Multilevel SQP-methods for PDAE-constrained Optimization Based on Space-Time Adaptive PDAE Solvers (Leugering, G.; Engell, S.; Griewank, A.; Hinze, M.; Rannacher, R.; Schulz, V.; Ulbrich, M.; Ulbrich, S., eds.), Springer Verlag, volume 160, . [bibtex]
Constrained Optimization and Optimal Control for Partial Differential Equations (; ; and ), Chapter in Advanced Numerical Methods for PDE Constrained Optimization with Application to Optimal Design in Navier Stokes Flow (Leugering, G.; Engell, S.; Griewank, A.; Hinze, M.; Rannacher, R.; V. Schulz, M. Ulbrich S. Ulbrich, eds.), Springer Verlag, volume 160, . [bibtex]
The Steiner Connectivity Problem (; and ), In Mathematical Programming, volume 142, . [bibtex]
Models for Fare Planning in Public Transport (; and ), In Discrete Appl. Math., volume 160, . [bibtex]
Reconstructing visibility graphs with simple robots (; ; ; ; and ), In Theoretical Computer Science, volume 444, . [bibtex]
2011
Topology and Geometry Optimization of Branched Sheet Metal Products (; ; ; and ), In PAMM, volume 11, . [bibtex]
Permutation Polytopes of Cyclic Groups (; ; and ), . [bibtex]
Unsicherheitsoptimierte Prozesskette bei der Bohrungsfeinbearbeitung (; ; ; and ), In wt Werkstatttechnik online, Springer, volume 101, . [bibtex]
Mapping polygons (), PhD thesis, ETH Zurich, . [bibtex]
Analysis of Market Demand Parameters for the Evaluation of Flexibility in Forming Technology (; ; ; and ), In Enabling Manufacturing Competitiveness and Economic Sustainability, Springer, . [bibtex]
Adaptive multilevel inexact SQP methods for PDE-constrained optimization ( and ), In SIAM J. Optim., volume 21, . [bibtex] [pdf] [doi]
Line Planning on Paths and Tree Networks with Applications to the Quito Trolebús System (; ; and ), In Int. Trans. Oper. Res., volume 18, . [bibtex] [pdf] [doi]
Improved convergence properties of the Lin-Fukushima-regularization method for mathematical programs with complementarity constraints (; and ), In Numerical Algebra, Control and Optimization, volume 1, . [bibtex]
Optimierung Technischer Kapazitäten in Gasnetzen (; ; ; ; ; ; ; ; ; ; ; ; ; and ), In Optimierung in der Energiewirtschaft, . [bibtex]
Examples of Kähler-Einstein toric Fano manifolds associated to non-symmetric reflexive polytopes ( and ), In Beitr. Algebra Geom., volume 52, . [bibtex] [pdf] [doi]
Effiziente Energiewandlung als Optimierungs- und Skalierungsaufgabe ( and ), In TU forschen, Wissenschaftsmagazin, . [bibtex]
Maple: Eine Einführung in das Computer-Algebra-System (; ; ; ; and ), RRZN, . [bibtex]
Orbitopal Fixing (; and ), In Discrete Optimization, volume 8, . [bibtex]
Optimal control of hydroforming processes ( and ), In PAMM, Wiley Online Library, volume 11, . [bibtex]
Branch-Cut-and-Propagate for the Maximum k-Colorable Subgraph Problem with Symmetry ( and ), In Proc. 8th International Conference, CPAIOR 2011, Berlin (Achterberg, Tobias; Beck, J. Christopher, eds.), Springer, volume 6697, . [bibtex]
The Maximum k-Colorable Subgraph Problem and Orbitopes ( and ), In Discrete Optimization, volume 8, . [bibtex]
Parallel Monte-Carlo Tree Search for HPC Systems (), In Euro-Par (2), . [bibtex]
Disruption Management With Rescheduling of Trips and Vehicle Circulations (; ; and ), In ASME Conference Proceedings, ASME, . [bibtex]
Modelling Games with the help of Quantified Integer Linear Programs (; ; and ), In ACG 13 (, ed.), Springer, . [bibtex]
Quantified Linear Programs: A Computational Study (; ; and ), In Proceeding ESA 2011 (, ed.), Springer, . [bibtex]
A polygon is determined by its angles (; and ), In Computational Geometry: Theory and Applications, volume 44, . [bibtex]
Telling convex from reflex allows to map a polygon (; ; ; and ), In Proceedings of the 28th International Symposium on Theoretical Aspects of Computer Science (STACS), . [bibtex]
Large Neighborhood Search beyond MIP (; ; and ), In Proceedings of the 9th Metaheuristics International Conference (MIC 2011) (Gaspero, Luca Di; Schaerf, Andrea; Stützle, Thomas, eds.), . [bibtex]
Online railway delay management: Hardness, simulation and computation (), In Simulation, volume 87, . [bibtex]
2010
Optimale Steuerung wirkmedienbasierter Tiefziehprozesse ( and ), Chapter in Tagungsband / Sonderforschungsbereich 666 Integrale Blechbauweisen höherer Verzweigungsordnung - Entwicklung, Fertigung, Bewertung : 3. Zwischenkolloquium 29./30. September 2010 (Groche, Peter, ed.), Meisenbach, . [bibtex]
Form- und Topologieoptimierung verzweigter Blechbauteile (; ; ; and ), Chapter in Tagungsband / Sonderforschungsbereich 666 Integrale Blechbauweisen höherer Verzweigungsordnung - Entwicklung, Fertigung, Bewertung : 3. Zwischenkolloquium 29./30. September 2010 (Groche, Peter, ed.), Meisenbach, . [bibtex]
Adaptive multilevel SQP-methods for PDE-constrained optimization (), PhD thesis, Technische Universität Darmstadt, . [bibtex]
Mathematical programs with equilibrium constraints: Enhanced Fritz John-conditions, new constraint qualifications, and improved exact penalty results ( and ), In SIAM Journal on Optimization, volume 20, . [bibtex]
Totally splittable polytopes ( and ), In Discrete Comput. Geom., volume 44, . [bibtex] [pdf] [doi]
Tropical and ordinary convexity combined ( and ), In Adv. Geom., volume 10, . [bibtex] [pdf] [doi]
Drawing polytopal graphs with \tt polymake (; and ), In Comput. Vis. Sci., volume 13, . [bibtex] [pdf] [doi]
Polyhedral and Algorithmic Properties of Quantified Linear Programs (; and ), In Proceeding ESA 2010, Springer, . [bibtex]
Sparse Approximate Solution of Partial Differential Equations (; ; and ), In Applied Numerical Mathematics, volume 60, . [bibtex]
Generating Smooth Lattice Polytopes (; and ), In Proceedings of the ICMS, Kobe, . [bibtex] [doi]
Convergence of linearized and adjoint approximations for discontinuous solutions of conservation laws. Part 2: Adjoint approximations and extensions ( and ), In SIAM J. Numer. Anal., volume 48, . [bibtex] [pdf] [doi]
Convergence of linearized and adjoint approximations for discontinuous solutions of conservation laws. Part 1: Linearized approximations and linearized output functionals ( and ), In SIAM J. Numer. Anal., volume 48, . [bibtex] [pdf] [doi]
Rechnet sich Flexibilität in der Umformtechnik? (; ; ; ; ; and ), In wt-Online, Springer, . [bibtex]
Reconstructing a simple polygon from its angles (; and ), In Proceedings of the 12th Scandinavian Symposium and Workshops on Algorithm Theory (SWAT), . [bibtex]
Combination of an adaptive multilevel SQP method and a space-time adaptive PDAE solver for optimal control problems (; ; and ), In Procedia Computer Science, volume 1, . [bibtex]
How simple robots benefit from looking back (; ; ; and ), In Proceedings of the 7th International Conference on Algorithms and Complexity (CIAC), . [bibtex]
2009
Nonlinear pseudo-Boolean optimization: relaxation or propagation? (; and ), In Theory and Applications of Satisfiability Testing – SAT 2009 (Kullmann, Oliver, ed.), Springer, volume 5584, . [bibtex]
Packing Solar Cells on a Roof ( and ), In Optimization and Engineering, forthcoming, . [bibtex]
An Adaptive Linear Approximation Algorithm for Copositive Programs ( and ), In SIAM Journal on Optimization, forthcoming, . [bibtex]
Copositive Lyapunov Functions for Switched Systems over Cones ( and ), In Systems and Control Letters, forthcoming, . [bibtex]
Primal-dual interior-point methods for PDE-constrained optimization ( and ), In Math. Program., volume 117, . [bibtex]
polymake and lattice polytopes (; and ), Chapter in 21st International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2009), Assoc. Discrete Math. Theor. Comput. Sci., Nancy, . [bibtex]
Tropical convex hull computations (), Chapter in Tropical and idempotent mathematics, Amer. Math. Soc., volume 495, . [bibtex]
Quadratic Gröbner bases for smooth $3\times3$ transportation polytopes ( and ), In J. Algebraic Combin., volume 30, . [bibtex] [doi]
How to draw tropical planes (; and ), In Electron. J. Combin., volume 16, . [bibtex] [pdf]
\tt polymake and lattice polytopes ( and ), In 21st International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2009), Assoc. Discrete Math. Theor. Comput. Sci., Nancy, . [bibtex]
Optimization with PDE constraints (; ; and ), Springer, volume 23, . [bibtex]
Competitive Online Multicommodity Routing (; and ), In Theory of Computing Systems, volume 45, . [bibtex]
Kostenoptimierte Planung gekoppelter Strom-, Gas- und Wär\-menetze (; ; ; ; and ), Chapter in Innovative Modellie\-rung und Optimierung von Energiesystemen (R. Schultz; H.-J. Wagner, eds.), LIT Verlag, volume 26, . [bibtex]
From State-of-the-Art Static Fleet Assignment to Flexible Stochastic Planning of the Future (), In Algorithmics of Large and Complex Networks, . [bibtex]
Betriebsoptimierung zur ökonomischen Bewertung von Speichern unter Berücksichtigung regenerativer Energieeinspeisung (; ; ; ; ; and ), Chapter in Innovative Modellie\-rung und Optimierung von Energiesystemen (R. Schultz; H.-J. Wagner, eds.), LIT Verlag, volume 26, . [bibtex]
Steuerung einer Sortieranlage, z.B. für Altpapier (; ; ; ; and ), Deutsche Patentanmeldung 10 2008 013 034.6-27, . [bibtex]
On the limitations of combinatorial visibilities (; ; ; ; and ), In Proceedings of the 25th European Workshop on Computational Geometry (EuroCG), . [bibtex]
A continuous adjoint approach to shape optimization for Navier Stokes flow (; ; and ), Chapter in Optimal control of coupled systems of partial differential equations, Birkhäuser Verlag, volume 158, . [bibtex] [pdf] [doi]
The Line Connectivity Problem (; and ), In Operations Research Proceedings 2008 (Fleischmann, Bernhard; Borgwardt, Karl Heinz; Klein, Robert; Tuma, Axel, eds.), Springer-Verlag, . [bibtex]
Reconstructing visibility graphs with simple robots (; ; ; ; and ), In Proceedings of the 16th International Colloquium on Structural Information and Communication Complexity (SIROCCO), . [bibtex]
Detecting Orbitopal Symmetries ( and ), In Operations Research Proceedings 2008 (Fleischmann, Bernhard; Borgwardt, Karl Heinz; Klein, Robert; Tuma, Axel, eds.), Springer-Verlag, . [bibtex]
On permutation polytopes (; ; and ), In Adv. Math., volume 222, . [bibtex] [doi]
On randomized broadcasting in Star graphs (; and ), In Discrete Appl. Math., Elsevier Science Publishers B. V., volume 157, . [bibtex] [doi]
2008
Local realism, detection efficiencies, and probability polytopes (; ; and ), In Physical Review A, volume 73, . [bibtex]
Line Planning on Paths and Tree Networks with Applications to the Quito Trolebús System (; ; and ), In ATMOS 2008 – 8th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems (Fischetti, Matteo; Widmayer, Peter, eds.), Schloss Dagstuhl – Leibniz-Zentrum für Informatik, Germany, . [bibtex] [pdf]
A Globally Convergent Primal-Dual Interior-Point Filter Method for Nonlinear Programming: New Filter Optimality Measures and Computational Results (; ; and ), Technical report, Technische Universität Darmstadt, . [bibtex]
Branch-And-Cut for the Maximum Feasible Subsystem Problem (), In SIAM J. Optim., volume 19, . [bibtex]
The GOmputer: Accelerating GO with FPGAs. (; ; ; ; ; ; and ), In Proceeding ERSA 2008, Springer, . [bibtex]
Der Alphabeta-Algorithmus für Spielbäume: Wie bringe ic h meinen Computer zum Schachspielen? (; and ), In Taschenbuch der Algorithmen (Vöcking, B.; Alt, H.; Dietzfelbinger, M.; Reischuk, R.; Scheideler, C.; Vollmer, H.; Wagner, D., eds.), Springer, . [bibtex]
Splitting polytopes ( and ), In Münster J. Math., volume 1, . [bibtex]
Algorithmische Geometrie ( and ), Vieweg, . [bibtex]
Lattice points in Min\-kows\-ki sums (; ; and ), In Electron. J. Combin., volume 15, . [bibtex] [pdf]
Algorithmic copositivity detection by simplicial partition ( and ), In Linear Algebra Appl., volume 428, . [bibtex]
Interior points of the completely positive cone ( and ), In Electron. J. Linear Algebra, volume 17, . [bibtex]
Topologie und dynamische Netzwerke: Anwendungen der Zukunft (; and ), In Produktionsfaktor Mathematik (M. Grötschel, K. Lucas V. Mehrmann, ed.), . [bibtex]
Packing and Partitioning Orbitopes ( and ), In Math. Program., volume 114, . [bibtex]
Exact and Approximate Sparse Solutions of Underdetermined Linear Equations ( and ), In SIAM J. Sci. Comput, volume 31, . [bibtex]
A Twofold Distributed Game-Tree Search Approach U sing Interconnected Clusters. (; and ), In Proceeding Euro-Par 2008, Springer, . [bibtex]
A Discrete Optimization Approach to Large Scale Supply Networks Based on Partial Differential Equations (; ; and ), In SIAM Journal on Scientific Computing, volume 30, . [bibtex]
Editorial: Special issue dedicated to the EURO Summer Institute ESI XXIV: Optimization challenges in engineering-methods, software, and applications (; ; and ), In Mathematical Methods of Operations Research, volume 68, . [bibtex]
Multi-criteria shortest paths in time-dependent train networks (; and ), In Proceedings of the 7th International Workshop on Experimental Algorithms (WEA), . [bibtex]
Angebotsplanung im öffentlichen Nahverkehr (; and ), In HEUREKA '08 – Optimierung in Verkehr und Transport, FGSV Verlag, Köln, . [bibtex]
Models for Line Planning in Public Transport (; and ), In Computer-aided Systems in Public Transport (Hickman, Mark; Mirchandani, Pitu; Voß, Stefan, eds.), Springer-Verlag, volume 600, . [bibtex]
TOPSU - RDM a simulation platform for online railway delay management (; ; and ), In Simutools '08: Proceedings of the 1st international conference on Simulation tools and techniques for communications, networks and systems & work shops, ICST (Institute for Computer Sciences, Social-Informatics and Tele communications Engineering), . [bibtex]
On the Graph Bisection Cut Polytope (; ; and ), In SIAM Journal on Discrete Mathematics, volume 22, . [bibtex]
A Comparative Study of Linear and Semidefinite Branch-and-Cut Methods for Solving the Minimum Graph Bisection Problem (; ; and ), In Integer Programming and Combinatorial Optimization (A. Lodi; A. Panconesi; G. Renaldi, eds.), . [bibtex]
2007
Algorithmenbasierte Produktentwicklung für integrale Blechbauweisen höherer Verzweigungsordnung (; ; and ), In 5. Gemeinsamen Kolloquiums Konstruktionstechnik 2007, . [bibtex]
Generalized SQP methods with `parareal' time-domain decomposition for time-dependent PDE-constrained optimization (), Chapter in Real-time PDE-constrained optimization, SIAM, volume 3, . [bibtex]
Solving Gas Optimization Problems by Simulated Annealing (; and ), Technical report, Darmstadt University of Technology, . [bibtex]
A simulated annealing algorithm for transient optimization in gas networks (; and ), In Mathematical Methods of Operations Research, volume 66, . [bibtex]
Affine buildings and tropical convexity (; and ), In Albanian J. Math., volume 1, . [bibtex]
Bounds on the $f$-vectors of tight spans ( and ), In Contrib. Discrete Math., volume 2, . [bibtex]
Solving fractional problems with dynamic multistart improving hit-and-run (; and ), In Ann. Oper. Res., volume 156, . [bibtex]
Neighborly cubical polytopes and spheres ( and ), In Israel J. Math., volume 159, . [bibtex] [pdf] [doi]
Editorial: Challenges of continuous optimization in theory and applications (; ; and ), In European J. Oper. Res., volume 181, . [bibtex]
Products of foldable triangulations ( and ), In Adv. Math., volume 210, . [bibtex] [pdf] [doi]
Gekoppelte optimale Auslegung von Strom-, Gas- und Wärmenetzen (; ; and ), In Optimierung in der Energiewirtschaft, VDI-Berichte Nr. 2018, . [bibtex]
On Fanos and Chimneys ( and ), Chapter in Mini-Work\-shop: Projective normality of smooth toric varieties, volume 4, . [bibtex]
Modellierung von Fertigungsrestriktionen bei der Herstellung von verzweigten Blechbauteilen ( and ), In Tagungsband 1. Zwischenkolloqium SFB 666 (P. Groche, ed.), Meisenbach Verlag, Bamberg, . [bibtex]
Verfahren und Vorrichtung zum Ermitteln eines Kontaktzeitpunktes zum Kontaktieren eines Geldmittelübergabesystems (; ; and ), Internationale Patentanmeldung 207T038 PCT, . [bibtex]
Verfahren und Vorrichtung zum Ermitteln eines Kontaktzeitpunktes zum Kontaktieren eines Geldmittelübergabesystems (; ; and ), Deutsche Patentanmeldung 10 2007 023 598.6, . [bibtex]
Mixed-Integer Models for Topology Optimization in Sheet Metal Design ( and ), In PAMM, Proceedings of Applied Mathematics and Mechanics, volume 7, . [bibtex]
Scheduling Locomotives and Car Transfers in Freight Transport (; ; ; and ), Technical report, FB Mathematik, Technische Universität Darmstadt, . [bibtex]
Diskrete und kontinuierliche Modelle zur Topologie- und Geometrie-Optimierung von Blechprofilen (; ; and ), In Tagungsband 1. Zwischenkolloqium SFB 666 (P. Groche, ed.), Meisenbach Verlag, Bamberg, . [bibtex]
Agent-based randomized broadcasting in large networks. (; and ), In Discrete Applied Mathematics, volume 155, . [bibtex]
A Column-Generation Approach to Line Planning in Public Transport (; and ), In Transportation Sci., volume 41, . [bibtex]
An Approach to Algorithm-Based Design in Product Development (; ; ; ; ; and ), In Konstruktion, volume 5, . [bibtex]
2006
Routing in Line Planning for Public Transport ( and ), Chapter in Operations Research Proceedings 2005 (Haasis, Hans-Dietrich; Kopfer, Herbert; Schönberger, Jörn, eds.), Springer-Verlag, . [bibtex]
Mixed Integer Models for the Stationary Case of Gas Network Optimization (; and ), In Mathematical Programming B, volume 105, . [bibtex]
Flexible object hierarchies in polymake (extended abstract) ( and ), Chapter in Mathematical software—ICMS 2006, Springer, volume 4151, . [bibtex] [pdf] [doi]
Constructions for 4-polytopes and the cone of flag vectors ( and ), Chapter in Algebraic and geometric combinatorics, Amer. Math. Soc., volume 423, . [bibtex] [doi]
New polytopes from products (), In J. Combin. Theory Ser. A, volume 113, . [bibtex] [doi]
Computing optimal Morse matchings ( and ), In SIAM J. Discrete Math., volume 20, . [bibtex] [pdf] [doi]
Computing Optimal Morse Matchings ( and ), In SIAM J. Discrete Math., volume 20, . [bibtex]
Competitive Online Multicommodity Routing (; and ), Chapter in Proc. Workshop on Approximation and Online Algorithms (WAOA) 2006 (Erlebach, Thomas; Kaklamanis, Christos, eds.), Springer, volume 4368, . [bibtex]
Cash Recycling Systems: Prediction and Optimization (; ; and ), In PAMM, Proceedings of Applied Mathematics and Mechanics, volume 6, . [bibtex]
Mixed Integer Models for Branched Sheet Metal Products ( and ), In PAMM, Proceedings of Applied Mathematics and Mechanics, volume 6, . [bibtex]
Mathematische Modelle zur betrieblichen Optimierung ( and ), In Z! - das Zukunftsmagazin, volume 1, . [bibtex]
A Multicriterial Approach for Optimizing Bus Schedules and School Starting Times ( and ), In Annals of Operations Research, volume 147, . [bibtex]
Locomotive and Wagon Scheduling in Freight Transport (; ; and ), In ATMOS 2006 - 6th Workshop on Algorithmic Methods and Models for Optimization of Railways (Jacob, Riko; Müller-Hannemann, Matthias, eds.), . [bibtex]
Combinatorial and Continuous Models for the Optimization of Traffic Flows on Networks (; ; and ), In SIAM Journal on Optimization, volume 16, . [bibtex]
UMTS Radio Network Evaluation and Optimization beyond Snapshots (; ; and ), In Mathematical Methods of Operations Research, volume 63, . [bibtex]
Verfahren und Vorrichtung zum Auswuchten von wellenelastischen Rotoren (; ; and ), Deutsche Patentanmeldung 10 2006 060 583.7, . [bibtex]
Optimal Fares for Public Transport (; and ), Chapter in Operations Research Proceedings 2005 (Haasis, Hans-Dietrich; Kopfer, Herbert; Schönberger, Jörn, eds.), Springer-Verlag, . [bibtex]
Public transport to the fORe! (; and ), In OR/MS Today, volume 33, . [bibtex]
Optimization of sheet metal products. (), Chapter in Operations research proceedings 2005. Selected papers of the annual international conference of the German Operations Research Society (GOR), Bremen, Germany, September 7–9, 2005., Berlin: Springer, . [bibtex]
Topology- and Shape-Optimization of Branched Sheet Metal Products (; ; ; ; ; ; ; and ), In Operations Research Proceedings 2005 (Haasis, H.; Kopfer, H.; Schönberger, J., eds.), Springer, Berlin, . [bibtex]
Hybrid Genetic Algorithm Within Branch-and-Cut for the Minimum Graph Bisection Problem (; ; and ), In Proceedings of 6th European Conference, EvoCOP 2006, Budapest, Hungary, April 10-12, 2006, Springer, Berlin, volume 3906, . [bibtex]
Hybrid Genetic Algorithm Within Branch-and-Cut for the Minimum Graph Bisection Problem (; ; ; and ), In Proceedings of 6th European Conference, EvoCOP 2006, Budapest, Hungary, April 10-12, 2006, Springer, volume 3906, . [bibtex]
MIPLIB 2003 (; and ), In Operations Research Letters, Elsevier / North-Holland, volume 34, . [bibtex] [doi]
2005
Cutting Planes for the Optimisation of Gas Networks ( and ), In Modeling, Simulation and Optimization of Complex Processe (H.G. Bock; E. Kostina; H.X. Phu; R. Rannacher, eds.), Springer, Heidelberg, . [bibtex]
Polytope propagation on graphs (), Chapter in Algebraic statistics for computational biology, Cambridge Univ. Press, . [bibtex] [pdf] [doi]
Complexes of discrete Morse functions ( and ), In Discrete Math., volume 302, . [bibtex] [pdf] [doi]
Tropical halfspaces (), Chapter in Combinatorial and computational geometry, Cambridge Univ. Press, volume 52, . [bibtex]
Matching stochastic algorithms to objective function landscapes (; ; ; and ), In J. Global Optim., volume 31, . [bibtex]
Probabilistic subproblem selection in branch-and-bound algorithms ( and ), In J. Comput. Appl. Math., volume 182, . [bibtex]
One-point suspensions and wreath products of polytopes and spheres ( and ), In J. Combin. Theory Ser. A, volume 110, . [bibtex] [pdf] [doi]
Bier spheres and posets (; and ), In Discrete Comput. Geom., volume 34, . [bibtex] [doi]
Optimizing Discrete Morse Functions – Extended Abstract ( and ), Chapter in Proceedings of the CTW04 Workshop on Graph Theory and Combinatorial Optimization, Elsevier, volume 17, . [bibtex]
Optimale kooperative Steuerung von Mehrflugzeugsystemen (; and ), Chapter in thema Forschung - Im Aufwind: Luftverkehr (U. Klingauf, ed.), TU Darmstadt, volume 3, . [bibtex]
Integrated Optimization of School Starting Times and Public Bus Services (; and ), In Operations Research Proceedings 2004 (H. Fleuren; Hertog, D. den; P. Kort, eds.), Springer, Berlin, . [bibtex]
Ein Planungstool zur Schulzeitstaffelung (; ; and ), In Supply Chain Management und Logistik (H.-O. Günther; D. Mattfeld; L. Suhl, eds.), Physica-Verlag Heidelberg, . [bibtex]
Computational Integer Programming and Cutting Planes ( and ), In Handbooks in Operations Research and Management Science (K. Aardal, G. Nemhauser R. Weismantel, ed.), Kluwer, volume 12, . [bibtex]
Was haben Schüler und Groß banken gemeinsam? ( and ), In Mathematik Lehren, volume 129, . [bibtex]
Optimization of Sheet Metal Products (; ; ; ; ; ; ; and ), Technical report, Darmstadt University of Technology, Department of Mathematics, . [bibtex]
LP-based Genetic Algorithm for the Minimum Graph Bisection Problem (; ; ; and ), Technical report, Darmstadt University of Technology, Department of Mathematics, . [bibtex]
Branching Rules Revisited (; and ), In Operations Research Letters, volume 33, . [bibtex]
2004
A globally convergent primal-dual interior-point filter method for nonlinear programming (; and ), In Math. Program., volume 100, . [bibtex]
On the superlinear local convergence of a filter-SQP method (), In Math. Program., volume 100, . [bibtex]
Optimisation of Partitioning for Parallel Flow Simulation on Block Structured Grids (; ; and ), In Proceedings of the Fourth International Conference on Engineering Computational Technology (B.H.V. Topping; Soares, C.A. Mota, eds.), Civil-Comp Press, . [bibtex]
Computing optimal discrete Morse functions ( and ), Chapter in Workshop on Graphs and Combinatorial Optimization, Elsevier, volume 17, . [bibtex]
The $E\sb t$-construction for lattices, spheres and polytopes ( and ), In Discrete Comput. Geom., volume 32, . [bibtex] [doi]
Convex hulls, oracles, and homology ( and ), In J. Symbolic Comput., volume 38, . [bibtex] [pdf] [doi]
IOSANA: Integrierte Optimierung der Schulanfangszeit und des Nahverkehrs-Angebots (; and ), In Optimierung im öffentlichen Nahverkehr (D.C. Mattfeld, ed.), . [bibtex]
Integrated Optimization of School Starting Times and Public Bus Services (; and ), In Proceedings of the Oberwolfach Workshop `Mathematics in the Supply Chain' (A. Fügenschuh; Veen, J. van der, eds.), . [bibtex]
Verfahren und Vorrichtung zur automatischen Optimierung von Schulanfangszeiten und des öffentlichen Personenverkehrs und entsprechendes Computerprogramm ( and ), Deutsches Patent 10 2004 020 786.0, . [bibtex]
Integer Programming Methods for UMTS Radio Network Planning (; ; ; and ), In Proc. of WiOpt'04, . [bibtex]
2003
Non-monotone trust region methods for nonlinear equality constrained optimization without a penalty function ( and ), In Math. Program., volume 95, . [bibtex]
Adjoint-based derivative computations for the optimal control of discontinuous solutions of hyperbolic conservation laws (), In Systems Control Lett., volume 48, . [bibtex]
A parametric characterization of local optimality (), In Math. Methods Oper. Res., volume 57, . [bibtex]
XML Data Specification and Documentation (; ; ; and ), (Eisenblätter, A.; Geerdes, H.-F.; Koch, T., eds.), Technical report D5.1-XML, IST-2000-28088 MOMENTUM, . [bibtex] [pdf]
Final Report on Automatic Planning and Optimisation (; ; ; ; and ), Technical report D4.7, IST-2000-28088 MOMENTUM, . [bibtex] [pdf]
Mathematical Methods for Automatic Optimization of UMTS Radio Networks (; ; ; ; ; ; and ), (Martin, A., ed.), Technical report D4.3, IST-2000-28088 MOMENTUM, . [bibtex] [pdf]
Some Algorithmic Problems in Polytope Theory ( and ), Chapter in Algebra, Geometry, and Software Systems (Joswig, Michael; Takayama, Nobuki, eds.), Springer-Verlag, . [bibtex]
Optimization Methods for UMTS Radio Network Planning (; ; ; ; and ), In Operation Research Proceedings 2003 (D. Ahr; R. Fahrion; M. Oswald; G. Reinelt, eds.), Springer-Verlag, . [bibtex]
On the Maximum Feasible Subsystem Problem, IISs, and IIS-hypergraphs (; and ), In Math. Program., volume 95, . [bibtex]
2002
A sensitivity and adjoint calculus for discontinuous solutions of hyperbolic conservation laws with source terms (), In SIAM J. Control Optim., volume 41, . [bibtex]
Large Scale Optimization (), In Encyclopedia of Life Support Systems (EOLSS), Chapter 6.5, UNESCO, . [bibtex]
Cutting Planes in Integer and Mixed Integer Programming (; ; and ), In Discrete Applied Mathematics, volume 123/124, . [bibtex]
Computing the Face Lattice of a Polytope from its Vertex-Facet Incidences ( and ), In Comput. Geom., volume 23, . [bibtex]
Modelling Feasible Network Configurations for UMTS (; ; ; ; ; ; and ), In Telecummincations network design and management (G. Anandalingam; S. Raghavan, eds.), Kluwer, . [bibtex]
Numerical solution of optimal control problems governed by the compressible Navier-Stokes equations (; ; ; and ), Chapter in Optimal control of complex structures (Oberwolfach, 2000), Birkhäuser, volume 139, . [bibtex]
Optimal control of unsteady compressible viscous flows (; ; ; and ), In Internat. J. Numer. Methods Fluids, volume 40, . [bibtex]
Operations Research Proceedings 2001, (P. Chamoni; R. Leisten; A. Martin; J. Minnemann; H. Stadtler, eds.), Springer, Heidelberg, . [bibtex]
Egoisten schaden sich selbst ( and ), Technical report 2251, Darmstadt University of Technology, Department of Mathematics, . [bibtex]
2001
General Mixed Integer Programming: Computational Issues for Branch-and-Cut Algorithms (), Chapter in Computational Combinatorial Optimization (D. Naddef; M. Jünger, eds.), Springer, Berlin, . [bibtex]
SteinLib: An Updated Library on Steiner Tree Problems in Graphs ( and ), In Steiner Trees in Industries (D.-Z. Du; X. Cheng, eds.), Kluwer, . [bibtex]
Vertex-Facet Incidences of Unbounded Polyhedra (; ; and ), In Advances in Geometry, volume 1, . [bibtex]
2000
Superlinear convergence of affine-scaling interior-point Newton methods for infinite-dimensional nonlinear problems with pointwise bounds ( and ), In SIAM J. Control Optim., volume 38, . [bibtex]
Parallelizing the Dual Simplex Method ( and ), In INFORMS Journal on Computing, volume 12, . [bibtex]
1999
Global convergence of trust-region interior-point algorithms for infinite-dimensional nonconvex minimization subject to pointwise bounds (; and ), In SIAM J. Control Optim., volume 37, . [bibtex]
On the existence and approximation of solutions for the optimal control of nonlinear hyperbolic conservation laws (), Chapter in Optimal control of partial differential equations (Chemnitz, 1998), Birkhäuser, volume 133, . [bibtex]
Integer programs with block structure (), Technical report, Konrad-Zuse-Zentrum für Informationstechnik Berlin, . [bibtex]
Superlinear and quadratic convergence of affine-scaling interior-point Newton methods for problems with simple bounds without strict complementarity assumption (; and ), In Math. Program., volume 86, . [bibtex]
Routing through virtual paths in layered telecommunication networks (; and ), In Operations Research, volume 47, . [bibtex]
A Counterexample to an Integer Analogue of Carathéodory's Theorem (; ; and ), In Journal für die Reine und Angewandte Mathematik, volume 510, . [bibtex]
1998
The Intersection of Knapsack Polyhedra and Extensions ( and ), In Integer Programming and Combinatorial Optimization (R.E. Bixby; E.A. Boyd; R.Z.Ríos-Mercado, eds.), . [bibtex]
Solving Steiner Tree Problems in Graphs to Optimality ( and ), In Networks, volume 32, . [bibtex]
The node capacitated graph partitioning problem: A computational study (; ; ; and ), In Mathematical Programming, volume 81, . [bibtex]
Decomposing Matrices into Blocks (; and ), In SIAM Journal on Optimization, volume 9, . [bibtex]
Frequency Assignment in Cellular Phone Networks (; and ), In Annals of Operations Research, volume 76, . [bibtex]
1997
The Steiner Tree Packing Problem in VLSI-Design (; and ), In Mathematical Programming, volume 78, . [bibtex]
1996
Automatic differentiation: a structure-exploiting forward mode with almost optimal complexity for Kantorovi\v c trees ( and ), Chapter in Applied mathematics and parallel computing, Physica, . [bibtex]
Optimum path packing on wheels: The consecutive case (; and ), In Computers Math. Applic., volume 31, . [bibtex]
Packing Steiner trees: Separation algorithms (; and ), In SIAM Journal on Discrete Mathematics, volume 9, . [bibtex]
Packing Steiner trees: Further facets (; and ), In European Journal on Combinatorics, volume 17, . [bibtex]
Packing Steiner Trees: A Cutting Plane Algorithm and Computational Results (; and ), In Mathematical Programming, volume 72, . [bibtex]
Packing Steiner Trees: Polyhedral Investigations (; and ), In Mathematical Programming, volume 72, . [bibtex]
Formulations and Valid Inequalities for Node Capacitated Graph Partitioning (; ; ; and ), In Mathematical Programming, volume 74, . [bibtex]
Solving Multiple Knapsack Problems by Cutting Planes (; and ), In SIAM Journal on Optimization, volume 6, . [bibtex]
Stable-Set and Other Techniques for Frequency Assignment Problems (; and ), In Anais da I Oficina Nacional em Problemas de Corte & Empacotamento, . [bibtex]
1995
Routing in grid graphs by cutting planes (extended version) (; and ), In ZOR – Methods and Models of Operations Research, volume 41, . [bibtex]
1994
Quadratic 0/1 optimization and a decomposition approach for the placement of electronic circuits (; ; and ), In Mathematical Programming, volume 63, . [bibtex]
1993
Packing Paths and Steiner Trees: Routing of Electronic Circuits ( and ), In CWI Quarterly, volume 6, . [bibtex]
Routing in Grid Graphs by Cutting Planes (; and ), In Integer Programming and Combinatorial Optimization (G. Rinaldi; L.A. Wolsey, eds.), . [bibtex]
Some Integer Programs Arising in the Design of Main Frame Computers (; ; ; and ), In ZOR – Methods and Models of Operations Research, volume 38, . [bibtex]
1990
A polynomially solvable case of the separation problem for the Steiner partition inequalities (), In Methods of Operations Research, volume 62, . [bibtex]
Simultaneous Placement in the Sea Of Gates Layout Style (; ; and ), In Methods of Operations Research, volume 62, . [bibtex]