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Fakultät für Mathematik
Anschrift
Thea-Leymann-Str. 9
45127 Essen
45127 Essen
Raum
WSC-O-4.52
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E-Mail
Funktionen
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Universitätsprofessor/in, Mathematische Optimierung
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Gruppe der Professorinnen und Professoren, Fakultätsrat
Aktuelle Veranstaltungen
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2024 WS
Vergangene Veranstaltungen (max. 10)
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2024 SS
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2023 WS
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2023 SS
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2022 WS
Die folgenden Publikationen sind in der Online-Universitätsbibliographie der Universität Duisburg-Essen verzeichnet. Weitere Informationen finden Sie gegebenenfalls auch auf den persönlichen Webseiten der Person.
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New second order sufficient optimality conditions for state constrained parabolic control problemsIn: Optimization (2024) in pressOnline Volltext: dx.doi.org/ (Open Access)
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Non-coercive Neumann Boundary Control ProblemsIn: Results in Mathematics Jg. 79 (2024) Nr. 6, 227Online Volltext: dx.doi.org/ (Open Access)
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Numerical analysis of a nonsmooth quasilinear elliptic control problem : I. Explicit second-order optimality conditionsIn: Mathematical Modelling and Numerical Analysis (ESAIM-M2AN) Jg. 58 (2024) Nr. 3, S. 993 - 1029Online Volltext: dx.doi.org/ (Open Access)
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FEM for Semilinear Elliptic Optimal Control with Nonlinear and Mixed ConstraintsIn: Journal of Optimization Theory and Applications (JOTA) Jg. 197 (2023) Nr. 1, S. 130 - 173Online Volltext: dx.doi.org/
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Existence of optimal controls in the absence of weakly continuous control-to-state-operatorIn: Pure and Applied Functional Analysis Jg. 7 (2022) Nr. 5, S. 1717 - 1732
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A priori error estimates for the finite element approximation of a nonsmooth optimal control problem governed by a coupled semilinear pde-ode systemIn: SIAM Journal on Control and Optimization Jg. 59 (2021) Nr. 5, S. 3329 - 3358Online Volltext: dx.doi.org/
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A priori error estimates for the space-time finite element discretization of an optimal control problem governed by a coupled linear PDE-ODE systemIn: Mathematical Control and Related Fields (MCRF) Jg. 11 (2021) Nr. 3, S. 601 - 624Online Volltext: dx.doi.org/ (Open Access)
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No-gap second-order optimality conditions for optimal control of a non-smooth quasilinear elliptic equationIn: Control, Optimisation and Calculus of Variations (ESAIM-COCV) Jg. 27 (2021) 2020092Online Volltext: dx.doi.org/ (Open Access)
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Numerical approximation of control problems of non-monotone and non-coercive semilinear elliptic equationsIn: Numerische Mathematik Jg. 149 (2021) Nr. 2, S. 305 - 340Online Volltext: dx.doi.org/ (Open Access)
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Optimal control of a non-smooth quasilinear elliptic equationIn: Mathematical Control and Related Fields (MCRF) Jg. 11 (2021) Nr. 3, S. 521 - 554Online Volltext: dx.doi.org/ (Open Access)
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Analysis of control problems of nonmontone semilinear elliptic equationsIn: Control, Optimisation and Calculus of Variations (ESAIM-COCV) Jg. 26 (2020) S. 80Online Volltext: dx.doi.org/ (Open Access)
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An inverse problem for determining right hand side of equations for hyperbolic equation of fourth orderIn: Advances in Differential Equations and Control Processes Jg. 20 (2019) Nr. 2, S. 143 - 161Online Volltext: dx.doi.org/
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Error estimates for semilinear parabolic control problems in the absence of Tikhonov termIn: SIAM Journal on Control and Optimization Jg. 57 (2019) Nr. 4, S. 2515 - 2540Online Volltext: dx.doi.org/ (Open Access)
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Optimierungsprobleme : Verschwundene Minima in der nichtlinearen OptimierungIn: Unikate: Berichte aus Forschung und Lehre (2019) Nr. 53: Mathematik - Herausforderung des Nichtlinearen, S. 69 - 72Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Error estimates for dirichlet control problems in polygonal domains : Quasi-uniform meshesIn: Mathematical Control and Related Fields (MCRF) Jg. 8 (2018) Nr. 1, S. 217 - 245Online Volltext: dx.doi.org/ (Open Access)
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Improved approximation rates for a parabolic control problem with an objective promoting directional sparsityIn: Computational Optimization and Applications Jg. 70 (2018) Nr. 1, S. 239 - 266Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Finite element approximation of sparse parabolic control problemsIn: Mathematical Control and Related Fields (MCRF) Jg. 7 (2017) Nr. 3, S. 393 - 417Online Volltext: dx.doi.org/
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Mass lumping for the optimal control of elliptic partial differential equationsIn: SIAM Journal on Numerical Analysis Jg. 55 (2017) Nr. 3, S. 1412 - 1436Online Volltext: dx.doi.org/
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Pontryagin’s Principle for Optimal Control Problem Governed by 3D Navier–Stokes EquationsIn: Journal of Optimization Theory and Applications (JOTA) Jg. 173 (2017) Nr. 1, S. 30 - 55Online Volltext: dx.doi.org/
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Reliable a posteriori error estimation for state-constrained optimal controlIn: Computational Optimization and Applications Jg. 68 (2017) Nr. 1, S. 121 - 162Online Volltext: dx.doi.org/
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Rechnen für langlebige Produkte : Optimierung von mechanischen SchädigungsprozessenIn: Unikate: Berichte aus Forschung und Lehre (2016) Nr. 48: Materials Chain : Forschung aus dem UA Ruhr-Profilschwerpunkt, S. 60 - 65Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Second-Order Optimality Conditions for Boundary Control Problems with Mixed Pointwise ConstraintsIn: SIAM Journal on Optimization Jg. 26 (2016) Nr. 3, S. 1912 - 1943Online Volltext: dx.doi.org/
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Finite element discretization of state-constrained elliptic optimal control problems with semilinear state equationIn: SIAM Journal on Control and Optimization Jg. 53 (2015) Nr. 2, S. 874 - 904Online Volltext: dx.doi.org/
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Finite element error estimates on the boundary with application to optimal controlIn: Mathematics of Computation (MCOM) Jg. 84 (2015) Nr. 291, S. 33 - 70Online Volltext: dx.doi.org/ Online Volltext
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Introduction to the special issue for EUCCO 2013In: Computational Optimization and Applications Jg. 62 (2015) Nr. 1, S. 1 - 3Online Volltext: dx.doi.org/
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Lower semicontinuity of the solution map to a parametric elliptic optimal control problem with mixed pointwise constraintsIn: Optimization Jg. 64 (2015) Nr. 5, S. 1219 - 1238Online Volltext: dx.doi.org/
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On the Regularity of the Solutions of Dirichlet Optimal Control Problems in Polygonal DomainsIn: SIAM Journal on Control and Optimization Jg. 53 (2015) Nr. 6, S. 3620 - 3641Online Volltext: dx.doi.org/ (Open Access)
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Regularization in Sobolev Spaces with Fractional OrderIn: Numerical Functional Analysis and Optimization Jg. 36 (2015) Nr. 3, S. 271 - 286Online Volltext: dx.doi.org/
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Second-Order Necessary Optimality Conditions for a Class of Optimal Control Problems Governed by Partial Differential Equations with Pure State ConstraintsIn: Journal of Optimization Theory and Applications (JOTA) Jg. 165 (2015) Nr. 1, S. 30 - 61Online Volltext: dx.doi.org/
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A Posteriori Error Analysis of Optimal Control Problems with Control ConstraintsIn: SIAM Journal on Control and Optimization Jg. 52 (2014) Nr. 3, S. 1832 - 1861Online Volltext: dx.doi.org/
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Identification of an unknown parameter function in the main part of an elliptic partial differential equationIn: Zeitschrift für Analysis und ihre Anwendungen / Journal for Analysis and its Applications Jg. 32 (2013) Nr. 2, S. 163 - 178Online Volltext: dx.doi.org/
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A priori error estimates for a state-constrained elliptic optimal control problemIn: Mathematical modelling and numerical analysis Jg. 46 (2012) Nr. 5, S. 1107 - 1120Online Volltext: dx.doi.org/
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A-posteriori error estimates for optimal control problems with state and control constraintsIn: Numerische Mathematik Jg. 120 (2012) Nr. 4, S. 733 - 762Online Volltext: dx.doi.org/
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Finite element error estimates for Neumann boundary control problems on graded meshesIn: Computational Optimization and Applications Jg. 52 (2012) Nr. 1, S. 3 - 28Online Volltext: dx.doi.org/
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Regularization for semilinear elliptic optimal control problems with pointwise state and control constraintsIn: Computational Optimization and Applications Jg. 52 (2012) Nr. 1, S. 181 - 207Online Volltext: dx.doi.org/
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On saturation effects in the Neumann boundary control of elliptic optimal control problemsIn: Computational optimization and applications Jg. 49 (2011) Nr. 2, S. 359 - 378Online Volltext: dx.doi.org/
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Semi-smooth Newton method for an optimal control problem with control and mixed control-state constraintsIn: Optimization methods & software Jg. 26 (2011) Nr. 2, S. 169 - 186Online Volltext: dx.doi.org/
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Error estimates for joint Tikhonov and Lavrentiev regularization of constrained control problemsIn: Applicable Analysis Jg. 89 (2010) Nr. 11, S. 1679 - 1691Online Volltext: dx.doi.org/
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Lipschitz stability for elliptic optimal control problems with mixed control-state constraintsIn: Optimization Jg. 59 (2010) Nr. 6, S. 833 - 849Online Volltext: dx.doi.org/
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Local quadratic convergence of SQP for elliptic optimal control problems with mixed control-state constraintsIn: Control and Cybernetics Jg. 39 (2010) Nr. 3, S. 717 - 738
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Sufficient optimality conditions for the Moreau-Yosida-type regularization concept applied to semilinear elliptic optimal control problems with pointwise state constraintsIn: Annals of the Academy of Romanian Scientists: Series on Mathematics and its Applications Jg. 2 (2010) Nr. 2, S. 222 - 246Online Volltext (Open Access)
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Was man simulieren kann, kann man auch optimieren... : zur mathematischen Optimierung komplexer technologischer ProzesseIn: Unikate: Berichte aus Forschung und Lehre (2008) Nr. 33: Mathematik: eine lebendige Wissenschaft, S. 22 - 29Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Superconvergence Properties for Optimal Control Problems Discretized by Piecewise Linear and Discontinuous FunctionsIn: Numerical functional analysis and optimization Jg. 28 (2007) Nr. 3-4, S. 425 - 443Online Volltext: dx.doi.org/
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Linear and Discontinuous Approximations for Optimal Control ProblemsIn: Numerical functional analysis and optimization Jg. 26 (2005) Nr. 3, S. 427 - 448Online Volltext: dx.doi.org/
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Recent Advances in Finite Element MethodsIn: Computational Methods in Applied Mathematics Jg. 23 (2023) Nr. 4, S. 813 - 815Online Volltext: dx.doi.org/ (Open Access)
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Preface : special issue on system modeling and optimizationIn: Mathematical Control and Related Fields (MCRF) Jg. 11 (2021) Nr. 3, S. iOnline Volltext: dx.doi.org/ (Open Access)
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IntroductionIn: Computational Optimization and Applications Jg. 52 (2012) Nr. 1, S. 1 - 2Online Volltext: dx.doi.org/
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Superconvergent Graded Meshes for an Elliptic Dirichlet Control ProblemIn: Advanced Finite Element Methods with Applications: Selected Papers from the 30th Chemnitz Finite Element Symposium 2017 / Apel, Thomas; Langer, Ulrich; Meyer, Arnd; Steinbach, Olaf; 30th Chemnitz Finite Element Symposium 2017 Jg. 128 2019, S. 1 - 16Online Volltext: dx.doi.org/
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Convergence of Adaptive Finite Elements for Optimal Control Problems with Control ConstraintsIn: Trends in PDE Constrained Optimization / Leugering, Günter; Benner, Peter; Engell, Sebastian (Hrsg.) 2014, S. 403 - 419Online Volltext: dx.doi.org/
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Graded Meshes in Optimal Control for Elliptic Partial Differential Equations : An OverviewIn: Trends in PDE Constrained Optimization / Leugering, Günter; Engell, Sebastian; Benner, Peter (Hrsg.) 2014, S. 285 - 302Online Volltext: dx.doi.org/
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OPTPDE : A Collection of Problems in PDE-Constrained OptimizationIn: Trends in PDE Constrained Optimization / Leugering, Günter; Benner, Peter; Engell, Sebastian (Hrsg.) 2014, S. 539 - 543Online Volltext: dx.doi.org/
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A Posteriori Error Estimators for Control Constrained Optimal Control ProblemsIn: Constrained Optimization and Optimal Control for Partial Differential Equations / Leugering, Günter; Engell, Sebastian; Griewank, Andreas; Hinze, Michael; Rannacher, Rolf; Schulz, Volker; Ulbrich, Michael; Ulbrich, Stefan (Hrsg.) 2012, S. 431 - 443Online Volltext: dx.doi.org/
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Discretization of optimal control problemsIn: Constrained Optimization and Optimal Control for Partial Differential Equations / Leugering, Günter; Engell, Sebastian; Griewank, Andreas; Hinze, Michael; Rannacher, Rolf; Schulz, Volker; Ulbrich, Michael; Ulbrich, Stefan (Hrsg.) 2012, S. 391 - 430Online Volltext: dx.doi.org/
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A posteriori error estimators for control constrained optimal control problemsIn: Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen Jg. 711 (2010) 13 S.