Edit Profile (opens in new tab) Neitzel, Ira Co-Author Distance Author ID: neitzel.ira Published as: Neitzel, Ira; Neitzel, I. External Links: MGP Documents Indexed: 33 Publications since 2008, including 3 Additional arXiv Preprints Co-Authors: 32 Co-Authors with 33 Joint Publications 538 Co-Co-Authors all top 5 Co-Authors 0 single-authored 7 Tröltzsch, Fredi 7 Wollner, Winnifried 4 Hoppe, Fabian 4 Wick, Thomas 3 Hehl, Andreas 3 Merino, Pedro 3 Rösch, Arnd 3 Vexler, Boris 2 Krumbiegel, Klaus 2 Prüfert, Uwe 2 Slawig, Thomas 1 Bonifacius, Lucas 1 Castro, Paula Maria 1 De los Reyes, Juan Carlos 1 Endtmayer, Bernhard 1 Gubisch, Martin 1 Hafemeyer, Dominik 1 Karl, Veronika 1 Khimin, Denis 1 Langer, Ulrich 1 Ludovici, Francesco 1 Mannel, Florian 1 Mateos, Mariano 1 Meinlschmidt, Hannes 1 Mohammadi, Masoumeh 1 Pfefferer, Johannes 1 Pieper, Konstantin 1 Simon, Nicolai 1 Volkwein, Stefan 1 Wachsmuth, Daniel 1 Wachsmuth, Gerd 1 Walter, Daniel all top 5 Serials 4 SIAM Journal on Control and Optimization 3 Numerische Mathematik 3 Computational Optimization and Applications 2 European Series in Applied and Industrial Mathematics (ESAIM): Control, Optimization and Calculus of Variations 2 Mathematical Control and Related Fields 1 Applicable Analysis 1 Computers & Mathematics with Applications 1 Control and Cybernetics 1 Journal of Optimization Theory and Applications 1 Numerical Functional Analysis and Optimization 1 Optimization 1 Numerical Algorithms 1 Optimization Methods & Software 1 Optimization and Engineering 1 Discussiones Mathematicae. Differential Inclusions, Control and Optimization 1 PAMM. Proceedings in Applied Mathematics and Mechanics 1 Annals of the Academy of Romanian Scientists. Mathematics and its Applications 1 Pure and Applied Functional Analysis all top 5 Fields 26 Calculus of variations and optimal control; optimization (49-XX) 16 Numerical analysis (65-XX) 12 Partial differential equations (35-XX) 7 Operations research, mathematical programming (90-XX) 4 Mechanics of deformable solids (74-XX) 3 Approximations and expansions (41-XX) 2 Classical thermodynamics, heat transfer (80-XX) 1 Real functions (26-XX) 1 Statistics (62-XX) 1 Systems theory; control (93-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 28 Publications have been cited 244 times in 179 Documents Cited by ▼ Year ▼ A priori error estimates for space-time finite element discretization of semilinear parabolic optimal control problems. Zbl 1245.65074 Neitzel, Ira; Vexler, Boris 39 2012 Finite element discretization of state-constrained elliptic optimal control problems with semilinear state equation. Zbl 1316.49037 Neitzel, Ira; Pfefferer, Johannes; Rösch, Arnd 28 2015 Second order optimality conditions for optimal control of quasilinear parabolic equations. Zbl 1405.35095 Bonifacius, Lucas; Neitzel, Ira 19 2018 On convergence of regularization methods for nonlinear parabolic optimal control problems with control and state constraints. Zbl 1188.49029 Neitzel, Ira; Tröltzsch, Fredi 16 2008 On regularization methods for the numerical solution of parabolic control problems with pointwise state constraints. Zbl 1171.49017 Neitzel, Ira; Tröltzsch, Fredi 16 2009 An optimal control problem governed by a regularized phase-field fracture propagation model. Zbl 1370.49003 Neitzel, I.; Wick, T.; Wollner, W. 15 2017 A smooth regularization of the projection formula for constrained parabolic optimal control problems. Zbl 1232.49024 Neitzel, Ira; Prüfert, Uwe; Slawig, Thomas 11 2011 Strategies for time-dependent PDE control with inequality constraints using an integrated modeling and simulation environment. Zbl 1167.65381 Neitzel, Ira; Prüfert, Uwe; Slawig, Thomas 11 2009 On linear-quadratic elliptic control problems of semi-infinite type. Zbl 1225.49008 Merino, Pedro; Neitzel, Ira; Tröltzsch, Fredi 11 2011 An optimal control problem governed by a regularized phase-field fracture propagation model. II: The regularization limit. Zbl 1420.49006 Neitzel, Ira; Wick, Thomas; Wollner, Winnifried 10 2019 Dirichlet control of elliptic state constrained problems. Zbl 1343.49045 Mateos, Mariano; Neitzel, Ira 10 2016 Regularization for semilinear elliptic optimal control problems with pointwise state and control constraints. Zbl 1260.49036 Krumbiegel, Klaus; Neitzel, Ira; Rösch, Arnd 9 2012 Sufficient optimality conditions for the Moreau-Yosida-type regularization concept applied to semilinear elliptic optimal control problems with pointwise state constraints. Zbl 1284.49027 Krumbiegel, Klaus; Neitzel, Ira; Rösch, Arnd 8 2010 A sparse control approach to optimal sensor placement in PDE-constrained parameter estimation problems. Zbl 1423.35452 Neitzel, Ira; Pieper, Konstantin; Vexler, Boris; Walter, Daniel 6 2019 Error estimates for the finite element discretization of semi-infinite elliptic optimal control problems. Zbl 1237.49039 Merino, Pedro; Neitzel, Ira; Tröltzsch, Fredi 5 2010 Optimal control of quasilinear parabolic PDEs with state-constraints. Zbl 1483.49027 Hoppe, Fabian; Neitzel, Ira 4 2022 Convergence of the SQP method for quasilinear parabolic optimal control problems. Zbl 1481.35259 Hoppe, Fabian; Neitzel, Ira 4 2021 A priori \(L^2\)-discretization error estimates for the state in elliptic optimization problems with pointwise inequality state constraints. Zbl 1421.65014 Neitzel, I.; Wollner, W. 3 2018 A-posteriori error estimation of discrete POD models for PDE-constrained optimal control. Zbl 06861101 Gubisch, Martin; Neitzel, Ira; Volkwein, Stefan 3 2017 Numerical analysis of state-constrained optimal control problems for PDEs. Zbl 1356.49051 Neitzel, Ira; Tröltzsch, Fredi 3 2012 An adaptive numerical method for semi-infinite elliptic control problems based on error estimates. Zbl 1323.49017 Merino, Pedro; Neitzel, Ira; Tröltzsch, Fredi 2 2015 A priori error estimates for state-constrained semilinear parabolic optimal control problems. Zbl 1398.49021 Ludovici, Francesco; Neitzel, Ira; Wollner, Winnifried 2 2018 A Lagrange multiplier method for semilinear elliptic state constrained optimal control problems. Zbl 1472.49027 Karl, Veronika; Neitzel, Ira; Wachsmuth, Daniel 2 2020 Multigoal-oriented optimal control problems with nonlinear PDE constraints. Zbl 1445.49012 Endtmayer, Bernhard; Langer, Ulrich.; Neitzel, I.; Wick, Thomas; Wollner, W. 2 2020 Finite element error estimates for one-dimensional elliptic optimal control by BV-functions. Zbl 1465.65137 Hafemeyer, Dominik; Mannel, Florian; Neitzel, Ira; Vexler, Boris 2 2020 Optimizing fracture propagation using a phase-field approach. Zbl 1502.49026 Hehl, Andreas; Mohammadi, Masoumeh; Neitzel, Ira; Wollner, Winnifried 1 2022 Purely time-dependent optimal control of quasilinear parabolic PDEs with sparsity enforcing penalization. Zbl 1509.49013 Hoppe, Fabian; Neitzel, Ira 1 2022 Second-order optimality conditions for an optimal control problem governed by a regularized phase-field fracture propagation model. Zbl 1517.49013 Hehl, Andreas; Neitzel, Ira 1 2023 Second-order optimality conditions for an optimal control problem governed by a regularized phase-field fracture propagation model. Zbl 1517.49013 Hehl, Andreas; Neitzel, Ira 1 2023 Optimal control of quasilinear parabolic PDEs with state-constraints. Zbl 1483.49027 Hoppe, Fabian; Neitzel, Ira 4 2022 Optimizing fracture propagation using a phase-field approach. Zbl 1502.49026 Hehl, Andreas; Mohammadi, Masoumeh; Neitzel, Ira; Wollner, Winnifried 1 2022 Purely time-dependent optimal control of quasilinear parabolic PDEs with sparsity enforcing penalization. Zbl 1509.49013 Hoppe, Fabian; Neitzel, Ira 1 2022 Convergence of the SQP method for quasilinear parabolic optimal control problems. Zbl 1481.35259 Hoppe, Fabian; Neitzel, Ira 4 2021 A Lagrange multiplier method for semilinear elliptic state constrained optimal control problems. Zbl 1472.49027 Karl, Veronika; Neitzel, Ira; Wachsmuth, Daniel 2 2020 Multigoal-oriented optimal control problems with nonlinear PDE constraints. Zbl 1445.49012 Endtmayer, Bernhard; Langer, Ulrich.; Neitzel, I.; Wick, Thomas; Wollner, W. 2 2020 Finite element error estimates for one-dimensional elliptic optimal control by BV-functions. Zbl 1465.65137 Hafemeyer, Dominik; Mannel, Florian; Neitzel, Ira; Vexler, Boris 2 2020 An optimal control problem governed by a regularized phase-field fracture propagation model. II: The regularization limit. Zbl 1420.49006 Neitzel, Ira; Wick, Thomas; Wollner, Winnifried 10 2019 A sparse control approach to optimal sensor placement in PDE-constrained parameter estimation problems. Zbl 1423.35452 Neitzel, Ira; Pieper, Konstantin; Vexler, Boris; Walter, Daniel 6 2019 Second order optimality conditions for optimal control of quasilinear parabolic equations. Zbl 1405.35095 Bonifacius, Lucas; Neitzel, Ira 19 2018 A priori \(L^2\)-discretization error estimates for the state in elliptic optimization problems with pointwise inequality state constraints. Zbl 1421.65014 Neitzel, I.; Wollner, W. 3 2018 A priori error estimates for state-constrained semilinear parabolic optimal control problems. Zbl 1398.49021 Ludovici, Francesco; Neitzel, Ira; Wollner, Winnifried 2 2018 An optimal control problem governed by a regularized phase-field fracture propagation model. Zbl 1370.49003 Neitzel, I.; Wick, T.; Wollner, W. 15 2017 A-posteriori error estimation of discrete POD models for PDE-constrained optimal control. Zbl 06861101 Gubisch, Martin; Neitzel, Ira; Volkwein, Stefan 3 2017 Dirichlet control of elliptic state constrained problems. Zbl 1343.49045 Mateos, Mariano; Neitzel, Ira 10 2016 Finite element discretization of state-constrained elliptic optimal control problems with semilinear state equation. Zbl 1316.49037 Neitzel, Ira; Pfefferer, Johannes; Rösch, Arnd 28 2015 An adaptive numerical method for semi-infinite elliptic control problems based on error estimates. Zbl 1323.49017 Merino, Pedro; Neitzel, Ira; Tröltzsch, Fredi 2 2015 A priori error estimates for space-time finite element discretization of semilinear parabolic optimal control problems. Zbl 1245.65074 Neitzel, Ira; Vexler, Boris 39 2012 Regularization for semilinear elliptic optimal control problems with pointwise state and control constraints. Zbl 1260.49036 Krumbiegel, Klaus; Neitzel, Ira; Rösch, Arnd 9 2012 Numerical analysis of state-constrained optimal control problems for PDEs. Zbl 1356.49051 Neitzel, Ira; Tröltzsch, Fredi 3 2012 A smooth regularization of the projection formula for constrained parabolic optimal control problems. Zbl 1232.49024 Neitzel, Ira; Prüfert, Uwe; Slawig, Thomas 11 2011 On linear-quadratic elliptic control problems of semi-infinite type. Zbl 1225.49008 Merino, Pedro; Neitzel, Ira; Tröltzsch, Fredi 11 2011 Sufficient optimality conditions for the Moreau-Yosida-type regularization concept applied to semilinear elliptic optimal control problems with pointwise state constraints. Zbl 1284.49027 Krumbiegel, Klaus; Neitzel, Ira; Rösch, Arnd 8 2010 Error estimates for the finite element discretization of semi-infinite elliptic optimal control problems. Zbl 1237.49039 Merino, Pedro; Neitzel, Ira; Tröltzsch, Fredi 5 2010 On regularization methods for the numerical solution of parabolic control problems with pointwise state constraints. Zbl 1171.49017 Neitzel, Ira; Tröltzsch, Fredi 16 2009 Strategies for time-dependent PDE control with inequality constraints using an integrated modeling and simulation environment. Zbl 1167.65381 Neitzel, Ira; Prüfert, Uwe; Slawig, Thomas 11 2009 On convergence of regularization methods for nonlinear parabolic optimal control problems with control and state constraints. Zbl 1188.49029 Neitzel, Ira; Tröltzsch, Fredi 16 2008 all cited Publications top 5 cited Publications all top 5 Cited by 256 Authors 19 Neitzel, Ira 11 Rösch, Arnd 11 Wick, Thomas 10 Casas, Eduardo 10 Wollner, Winnifried 9 Mateos, Mariano 9 Vexler, Boris 8 Brenner, Susanne Cecelia 8 Sung, Li-Yeng 7 Chrysafinos, Konstantinos 7 Hinze, Michael 6 Sun, Bing 6 Tao, Zhenzhen 6 Tröltzsch, Fredi 6 Wachsmuth, Daniel 5 Singler, John R. 5 Zhang, Yangwen 4 Gong, Wei 4 Hoppe, Fabian 4 Kanzow, Christian 4 Karl, Veronika 4 Kumar, Sarvesh 4 Kunisch, Karl 4 Langer, Ulrich 4 Liu, Jun 4 Prüfert, Uwe 4 Steck, Daniel Daniel 4 Steinbach, Marc Christian 3 Blank, Luise 3 Bonifacius, Lucas 3 Chen, Yanping 3 Egert, Moritz 3 Endtmayer, Bernhard 3 Holtmannspötter, Marita 3 Huang, Yunqing 3 Karasözen, Bülent 3 Khimin, Denis 3 Lin, Xiuxiu 3 Pieper, Konstantin 3 Sandilya, Ruchi 3 Ulbrich, Michael 3 Xiao, Mingqing 2 Ahmad Ali, Ahmad 2 Alexanderian, Alen 2 Alla, Alessandro 2 Antil, Harbir 2 Apel, Thomas 2 Bechtel, Sebastian 2 Chen, Gang 2 Deckelnick, Klaus 2 Deng, Yu 2 Garcke, Harald 2 Gedicke, Joscha 2 Guan, Hongbo 2 Haller-Dintelmann, Robert 2 Hehl, Andreas 2 Hu, Weiwei 2 Karatzas, Efthymios N. 2 Khan, Akhtar Ali 2 Kien, Bui Trong 2 Kostas, Dimitrios 2 Leykekhman, Dmitriy 2 Liu, Sijing 2 Ludovici, Francesco 2 Mehlitz, Patrick 2 Meinlschmidt, Hannes 2 Mohammadi, Masoumeh 2 Nhu, Vu Huu 2 Pfefferer, Johannes 2 Ruiz-Baier, Ricardo 2 Sama, Miguel 2 Sarbu, Lavinia 2 Shi, Dongyang 2 Sinha, Rajen Kumar 2 Slawig, Thomas 2 Styles, Vanessa 2 Ulbrich, Stefan 2 Urban, Karsten 2 Walter, Daniel 2 Yilmaz, Fikriye Nuray 1 Akil, Mohammad 1 Allendes, Alejandro 1 Alvarez-Vázquez, Lino Jose 1 Barral, Yves 1 Beckers, Susanne 1 Behrens, Jorn 1 Beranek, Nina 1 Berre, Inga 1 Bontinck, Zeger 1 Börgens, Eike 1 Braack, Malte 1 Bredies, Kristian 1 Brun, Mats Kirkesæther 1 Butz, Martin V. 1 Carioni, Marcello 1 Chen, Liuhong 1 Christof, Constantin 1 Clason, Christian 1 Diehl, Patrick 1 Djomegne, Landry ...and 156 more Authors all top 5 Cited in 59 Serials 16 Computational Optimization and Applications 14 SIAM Journal on Control and Optimization 8 Numerische Mathematik 8 European Series in Applied and Industrial Mathematics (ESAIM): Control, Optimization and Calculus of Variations 7 Mathematical Control and Related Fields 6 Journal of Computational and Applied Mathematics 5 Computers & Mathematics with Applications 5 Journal of Optimization Theory and Applications 5 Numerical Functional Analysis and Optimization 5 SIAM Journal on Numerical Analysis 5 Optimization and Engineering 5 Computational Methods in Applied Mathematics 4 Applied Mathematics and Optimization 4 Applied Numerical Mathematics 4 Optimization 4 Journal of Scientific Computing 4 European Series in Applied and Industrial Mathematics (ESAIM): Mathematical Modelling and Numerical Analysis 3 Inverse Problems 3 Journal of Mathematical Analysis and Applications 3 Journal of Differential Equations 3 Computational Mechanics 3 Oberwolfach Reports 2 Computer Methods in Applied Mechanics and Engineering 2 Optimal Control Applications & Methods 2 Numerical Methods for Partial Differential Equations 2 Numerical Algorithms 2 SIAM Journal on Optimization 2 Discrete and Continuous Dynamical Systems. Series B 2 International Journal of Numerical Analysis and Modeling 2 Results in Applied Mathematics 1 Applicable Analysis 1 Jahresbericht der Deutschen Mathematiker-Vereinigung (DMV) 1 Journal of Computational Physics 1 Journal of Mathematical Biology 1 Mathematical Methods in the Applied Sciences 1 Advances in Mathematics 1 Annali di Matematica Pura ed Applicata. Serie Quarta 1 Automatica 1 Computational Mathematics and Modeling 1 International Journal of Computer Mathematics 1 Journal of Nonlinear Science 1 SIAM Journal on Scientific Computing 1 The Journal of Analysis 1 Numerical Linear Algebra with Applications 1 Computational and Applied Mathematics 1 Journal of Inverse and Ill-Posed Problems 1 Journal of Convex Analysis 1 Advances in Computational Mathematics 1 The Journal of Fourier Analysis and Applications 1 Optimization Methods & Software 1 Communications in Nonlinear Science and Numerical Simulation 1 Lobachevskii Journal of Mathematics 1 Foundations of Computational Mathematics 1 Journal of Numerical Mathematics 1 Journal of Applied Mathematics and Computing 1 Analysis and Applications (Singapore) 1 Journal of Industrial and Management Optimization 1 GAMM-Mitteilungen 1 S\(\vec{\text{e}}\)MA Journal all top 5 Cited in 24 Fields 137 Calculus of variations and optimal control; optimization (49-XX) 111 Numerical analysis (65-XX) 77 Partial differential equations (35-XX) 27 Operations research, mathematical programming (90-XX) 16 Mechanics of deformable solids (74-XX) 15 Systems theory; control (93-XX) 9 Fluid mechanics (76-XX) 6 Functional analysis (46-XX) 4 General and overarching topics; collections (00-XX) 4 Operator theory (47-XX) 4 Statistics (62-XX) 4 Biology and other natural sciences (92-XX) 2 Real functions (26-XX) 2 Approximations and expansions (41-XX) 2 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Measure and integration (28-XX) 1 Ordinary differential equations (34-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Integral equations (45-XX) 1 Probability theory and stochastic processes (60-XX) 1 Optics, electromagnetic theory (78-XX) 1 Classical thermodynamics, heat transfer (80-XX) 1 Statistical mechanics, structure of matter (82-XX) 1 Geophysics (86-XX) Citations by Year