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ORCIDUlrich Langer
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2020 – today
- 2024
[j44]Ulrich Langer, Olaf Steinbach, Huidong Yang
:
Robust space-time finite element methods for parabolic distributed optimal control problems with energy regularization. Adv. Comput. Math. 50(2): 24 (2024)- [j43]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
An adaptive finite element method for distributed elliptic optimal control problems with variable energy regularization. Comput. Math. Appl. 160: 1-14 (2024) - [j42]Bernhard Endtmayer, Ulrich Langer, Andreas Schafelner:
Goal-oriented adaptive space-time finite element methods for regularized parabolic p-Laplace problems. Comput. Math. Appl. 167: 286-297 (2024) - [j41]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
Mass-lumping discretization and solvers for distributed elliptic optimal control problems. Numer. Linear Algebra Appl. 31(5) (2024) - [j40]Daniel Jodlbauer, Ulrich Langer, Thomas Wick, Walter Zulehner:
Matrix-Free Monolithic Multigrid Methods for Stokes and Generalized Stokes Problems. SIAM J. Sci. Comput. 46(3): 1599- (2024) - [i22]Bernhard Endtmayer, Ulrich Langer, Thomas Richter, Andreas Schafelner, Thomas Wick:
A Posteriori Single- and Multi-Goal Error Control and Adaptivity for Partial Differential Equations. CoRR abs/2404.01738 (2024) - [i21]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
Robust finite element solvers for distributed hyperbolic optimal control problems. CoRR abs/2404.03756 (2024) - 2023
- [j39]Ulrich Langer, Olaf Steinbach:
Recent Advances in Boundary Element Methods. Comput. Methods Appl. Math. 23(2): 297-300 (2023) - [j38]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
Robust Finite Element Discretization and Solvers for Distributed Elliptic Optimal Control Problems. Comput. Methods Appl. Math. 23(4): 989-1006 (2023) - [c14]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
Robust Iterative Solvers for Algebraic Systems Arising from Elliptic Optimal Control Problems. LSSC 2023: 35-43 - [i20]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
Mass-lumping discretization and solvers for distributed elliptic optimal control problems. CoRR abs/2304.14664 (2023) - [i19]Bernhard Endtmayer, Ulrich Langer, Andreas Schafelner:
Goal-Oriented Adaptive Space-Time Finite Element Methods for Regularized Parabolic p-Laplace Problems. CoRR abs/2306.07167 (2023) - [i18]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
Parallel iterative solvers for discretized reduced optimality systems. CoRR abs/2312.12282 (2023) - 2022
- [j37]Ulrich Langer, Olaf Steinbach, Huidong Yang:
Robust Discretization and Solvers for Elliptic Optimal Control Problems with Energy Regularization. Comput. Methods Appl. Math. 22(1): 97-111 (2022) - [j36]Ulrich Langer, Andreas Schafelner:
Adaptive space-time finite element methods for parabolic optimal control problems. J. Num. Math. 30(4): 247-266 (2022) - [i17]Daniel Jodlbauer, Ulrich Langer, Thomas Wick, Walter Zulehner:
Matrix-free Monolithic Multigrid Methods for Stokes and Generalized Stokes Problems. CoRR abs/2205.15770 (2022) - [i16]Ulrich Langer, Olaf Steinbach, Huidong Yang:
Robust space-time finite element error estimates for parabolic distributed optimal control problems with energy regularization. CoRR abs/2206.06455 (2022) - [i15]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
Robust finite element discretization and solvers for distributed elliptic optimal control problems. CoRR abs/2207.04664 (2022) - [i14]Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang:
An adaptive finite element method for distributed elliptic optimal control problems with variable energy regularization. CoRR abs/2209.08811 (2022) - 2021
- [j35]Bernhard Endtmayer, Ulrich Langer, Thomas Wick:
Reliability and Efficiency of DWR-Type A Posteriori Error Estimates with Smart Sensitivity Weight Recovering. Comput. Methods Appl. Math. 21(2): 351-371 (2021) - [j34]Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang:
Space-Time Finite Element Discretization of Parabolic Optimal Control Problems with Energy Regularization. SIAM J. Numer. Anal. 59(2): 675-695 (2021) - [j33]Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang:
Unstructured Space-Time Finite Element Methods for Optimal Control of Parabolic Equations. SIAM J. Sci. Comput. 43(2): A744-A771 (2021) - [j32]Ulrich Langer, Marco Zank:
Efficient Direct Space-Time Finite Element Solvers for Parabolic Initial-Boundary Value Problems in Anisotropic Sobolev Spaces. SIAM J. Sci. Comput. 43(4): A2714-A2736 (2021) - [c13]Ulrich Langer, Andreas Schafelner:
Simultaneous Space-Time Finite Element Methods for Parabolic Optimal Control Problems. LSSC 2021: 314-321 - [i13]Ulrich Langer, Olaf Steinbach, Huidong Yang:
Robust discretization and solvers for elliptic optimal control problems with energy regularization. CoRR abs/2102.03515 (2021) - [i12]Ulrich Langer, Andreas Schafelner:
Simultaneous space-time finite element methods for parabolic optimal control problems. CoRR abs/2103.01688 (2021) - [i11]Ulrich Langer, Andreas Schafelner:
Space-time hexahedral finite element methods for parabolic evolution problems. CoRR abs/2103.13835 (2021) - [i10]Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang:
Space-time finite element methods for the initial temperature reconstruction. CoRR abs/2103.16699 (2021) - 2020
- [j31]Bernhard Endtmayer, Ulrich Langer, Ira Neitzel, Thomas Wick, Winnifried Wollner:
Multigoal-oriented optimal control problems with nonlinear PDE constraints. Comput. Math. Appl. 79(10): 3001-3026 (2020) - [j30]Ulrich Langer, Andreas Schafelner:
Adaptive Space-Time Finite Element Methods for Non-autonomous Parabolic Problems with Distributional Sources. Comput. Methods Appl. Math. 20(4): 677-693 (2020) - [j29]Bernhard Endtmayer, Ulrich Langer, Thomas Wick:
Two-Side a Posteriori Error Estimates for the Dual-Weighted Residual Method. SIAM J. Sci. Comput. 42(1): A371-A394 (2020) - [i9]Bernhard Endtmayer, Ulrich Langer, Thomas Wick:
Reliability and efficiency of DWR-type a posteriori error estimates with smart sensitivity weight recovering. CoRR abs/2003.08999 (2020) - [i8]Ulrich Langer, Andreas Schafelner:
Adaptive space-time finite element methods for non-autonomous parabolic problems with distributional sources. CoRR abs/2003.09248 (2020) - [i7]Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang:
Unstructured Space-Time Finite Element Methods for Optimal Sparse Control of Parabolic Equations. CoRR abs/2003.14141 (2020) - [i6]Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang:
Unstructured space-time finite element methods for optimal control of parabolic equations. CoRR abs/2004.02014 (2020) - [i5]Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang:
Space-time finite element discretization of parabolic optimal control problems with energy regularization. CoRR abs/2004.09504 (2020) - [i4]Daniel Jodlbauer, Ulrich Langer, Thomas Wick:
Parallel matrix-free higher-order finite element solvers for phase-field fracture problems. CoRR abs/2005.00331 (2020) - [i3]Ulrich Langer, Marco Zank:
Efficient Direct Space-Time Finite Element Solvers for Parabolic Initial-Boundary Value Problems in Anisotropic Sobolev Spaces. CoRR abs/2008.01996 (2020)
2010 – 2019
- 2019
- [j28]Ulrich Langer, Svetlana Matculevich, Sergey I. Repin:
Guaranteed error bounds and local indicators for adaptive solvers using stabilised space-time IgA approximations to parabolic problems. Comput. Math. Appl. 78(8): 2641-2671 (2019) - [j27]Christoph Hofer, Ulrich Langer, Ioannis Toulopoulos:
Isogeometric analysis on non-matching segmentation: discontinuous Galerkin techniques and efficient solvers. J. Appl. Math. Comput. 61(1-2): 297-336 (2019) - [j26]Bernhard Endtmayer, Ulrich Langer, Thomas Wick:
Multigoal-oriented error estimates for non-linear problems. J. Num. Math. 27(4): 215-236 (2019) - [j25]Christoph Hofer, Ulrich Langer, Martin Neumüller, Rainer Schneckenleitner:
Parallel and Robust Preconditioning for Space-Time Isogeometric Analysis of Parabolic Evolution Problems. SIAM J. Sci. Comput. 41(3): A1793-A1821 (2019) - [c12]Bernhard Endtmayer, Ulrich Langer, Jan Philipp Thiele, Thomas Wick:
Hierarchical DWR Error Estimates for the Navier-Stokes Equations: h and p Enrichment. ENUMATH 2019: 363-372 - [c11]Ulrich Langer, Andreas Schafelner:
Space-Time Finite Element Methods for Parabolic Initial-Boundary Value Problems with Non-smooth Solutions. LSSC 2019: 593-600 - [i2]Bernhard Endtmayer, Ulrich Langer, Jan Philipp Thiele, Thomas Wick:
Hierarchical DWR Error Estimates for the Navier Stokes Equation: h and p Enrichment. CoRR abs/1912.04819 (2019) - 2018
- [j24]Ulrich Langer, Huidong Yang:
Numerical simulation of fluid-structure interaction problems with hyperelastic models: A monolithic approach. Math. Comput. Simul. 145: 186-208 (2018) - 2017
- [c10]Ulrich Langer, Martin Neumüller, Ioannis Toulopoulos:
Multipatch Space-Time Isogeometric Analysis of Parabolic Diffusion Problems. LSSC 2017: 21-32 - [c9]Ulrich Langer, Svetlana Matculevich, Sergey I. Repin:
Functional Type Error Control for Stabilised Space-Time IgA Approximations to Parabolic Problems. LSSC 2017: 55-65 - [i1]Ulrich Langer, Svetlana Matculevich, Sergey I. Repin:
Guaranteed error control bounds for the stabilised space-time IgA approximations to parabolic problems. CoRR abs/1712.06017 (2017) - 2016
- [j23]Christoph Hofer, Ulrich Langer, Ioannis Toulopoulos:
Discontinuous Galerkin Isogeometric Analysis of Elliptic Diffusion Problems on Segmentations with Gaps. SIAM J. Sci. Comput. 38(6) (2016) - 2015
- [b1]Vadim Glebovich Korneev, Ulrich Langer:
Dirichlet-Dirichlet Domain Decomposition Methods for Elliptic Problems - h and hp Finite Element Discretizations. WorldScientific 2015, ISBN 9789814578455, pp. 1-484 - [j22]Ulrich Langer, Angelos Mantzaflaris, Stephen Edward Moore, Ioannis Toulopoulos:
Mesh grading in isogeometric analysis. Comput. Math. Appl. 70(7): 1685-1700 (2015) - [j21]Ulrich Langer, Sergey I. Repin, Monika Wolfmayr:
Functional A Posteriori Error Estimates for Parabolic Time-Periodic Boundary Value Problems. Comput. Methods Appl. Math. 15(3): 353-372 (2015) - [j20]Ulrich Langer:
Editorial. Comput. Methods Appl. Math. 15(4): 415 (2015) - [j19]Ulrich Langer, Ioannis Toulopoulos:
Analysis of multipatch discontinuous Galerkin IgA approximations to elliptic boundary value problems. Comput. Vis. Sci. 17(5): 217-233 (2015) - [j18]Ulrich Langer, Huidong Yang:
Partitioned solution algorithms for fluid-structure interaction problems with hyperelastic models. J. Comput. Appl. Math. 276: 47-61 (2015) - [j17]Peter Gangl, Ulrich Langer, Antoine Laurain, Houcine Meftahi, Kevin Sturm:
Shape Optimization of an Electric Motor Subject to Nonlinear Magnetostatics. SIAM J. Sci. Comput. 37(6) (2015) - [c8]Ulrich Langer, Huidong Yang:
Algebraic Multigrid Based Preconditioners for Fluid-Structure Interaction and Its Related Sub-problems. LSSC 2015: 91-98 - 2014
- [c7]Angelos Mantzaflaris, Bert Jüttler, Boris N. Khoromskij, Ulrich Langer:
Matrix Generation in Isogeometric Analysis by Low Rank Tensor Approximation. Curves and Surfaces 2014: 321-340 - 2013
- [j16]Markus Kollmann, Michael Kolmbauer, Ulrich Langer, Monika Wolfmayr, Walter Zulehner:
A robust finite element solver for a multiharmonic parabolic optimal control problem. Comput. Math. Appl. 65(3): 469-486 (2013) - [j15]Michael Kolmbauer, Ulrich Langer:
A Robust Preconditioned MinRes Solver for Time-periodic Eddy Current Problems. Comput. Methods Appl. Math. 13(1): 1-20 (2013) - [j14]Ulrich Langer, Monika Wolfmayr:
Multiharmonic finite element analysis of a time-periodic parabolic optimal control problem. J. Num. Math. 21(4): 265-300 (2013) - [p1]Michael Kolmbauer, Ulrich Langer:
A Robust FEM-BEM Solver for Time-Harmonic Eddy Current Problems. Domain Decomposition Methods in Science and Engineering XX 2013: 297-304 - 2012
- [j13]Vadim G. Korneev, Yuri Kuznetsov, Ulrich Langer, Aleksandr M. Matsokin:
Editorial. Comput. Methods Appl. Math. 12(4): 367-368 (2012) - [j12]Peter Gangl, Ulrich Langer:
Topology optimization of electric machines based on topological sensitivity analysis. Comput. Vis. Sci. 15(6): 345-354 (2012) - [j11]Michael Kolmbauer, Ulrich Langer:
A Robust Preconditioned MinRes Solver for Distributed Time-Periodic Eddy Current Optimal Control Problems. SIAM J. Sci. Comput. 34(6) (2012) - 2011
- [c6]Clemens Hofreither, Ulrich Langer, Clemens Pechstein:
A Non-standard Finite Element Method Based on Boundary Integral Operators. LSSC 2011: 28-39 - 2010
- [j10]Dylan M. Copeland, Ulrich Langer:
Domain decomposition solvers for nonlinear multiharmonic finite element equations. J. Num. Math. 18(3): 157-175 (2010)
2000 – 2009
- 2009
- [c5]Clemens Hofreither, Ulrich Langer, Satyendra K. Tomar:
Boundary Element Simulation of Linear Water Waves in a Model Basin. LSSC 2009: 132-139 - 2008
- [j9]Sven Beuchler, Tino Eibner, Ulrich Langer:
Primal and Dual Interface Concentrated Iterative Substructuring Methods. SIAM J. Numer. Anal. 46(6): 2818-2842 (2008) - 2007
- [j8]Ulrich Langer, Günther Of, Olaf Steinbach, Walter Zulehner:
Inexact Data-Sparse Boundary Element Tearing and Interconnecting Methods. SIAM J. Sci. Comput. 29(1): 290-314 (2007) - [c4]Huidong Yang, Walter Zulehner, Ulrich Langer, Markus Baumgartner:
A robust PDE solver for the 3D Stokes/Navier-Stokes systems on the grid environment. GRID 2007: 145-152 - [c3]Ulrich Langer, Walter Zulehner, Huidong Yang, Markus Baumgartner:
GStokes: A Grid-enabled Solver for the 3D Stokes/Navier-Stokes System on Hybrid Meshes. ISPDC 2007: 377-382 - 2005
- [j7]Florian Bachinger, Ulrich Langer, Joachim Schöberl:
Numerical analysis of nonlinear multiharmonic eddy current problems. Numerische Mathematik 100(4): 593-616 (2005) - [c2]Ulrich Langer, D. Pusch:
Comparison of Geometrical and Algebraic Multigrid Preconditioners for Data-Sparse Boundary Element Matrices. LSSC 2005: 130-137 - 2003
- [j6]Ulrich Langer, Olaf Steinbach:
Boundary Element Tearing and Interconnecting Methods. Computing 71(3): 205-228 (2003) - [e1]Franz Winkler, Ulrich Langer:
Symbolic and Numerical Scientific Computation, Second International Conference, SNSC 2001, Hagenberg, Austria, September 10-11, 2001, Revised Papers. Lecture Notes in Computer Science 2630, Springer 2003, ISBN 3-540-40554-2 [contents] - 2001
- [j5]Gundolf Haase, Ulrich Langer, Stefan Reitzinger, Joachim Schöberl:
Algebraic multigrid methods based on element preconditioning. Int. J. Comput. Math. 78(4): 575-598 (2001) - [j4]Gundolf Haase, Michael Kuhn, Ulrich Langer:
Parallel multigrid 3D Maxwell solvers. Parallel Comput. 27(6): 761-775 (2001) - [c1]Ulrich Langer, Stefan Reitzinger, Josef Schicho:
Symbolic Methods for the Element Preconditioning Technique. SNSC 2001: 293-308
1990 – 1999
- 1997
- [j3]Ulrich Langer:
Editorial. Numer. Linear Algebra Appl. 4(3): 131 (1997) - 1991
- [j2]Gundolf Haase, Ulrich Langer, Arnd Meyer:
The approximate Dirichlet Domain Decomposition method. Part I: An algebraic approach. Computing 47(2): 137-151 (1991) - [j1]Gundolf Haase, Ulrich Langer, Arnd Meyer:
The approximate Dirichlet Domain Decomposition method. Part II: Applications to 2nd-order Elliptic B.V.P.s. Computing 47(2): 153-167 (1991)
Coauthor Index
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