Robust finite element solvers for distributed hyperbolic optimal control problems.

Ulrich Langer https://scholar.google.com/citations?user=fUMTtscAAAAJ https://zbmath.org/authors/?q=ai:langer.ulrich https://orcid.org/0000-0003-3797-7475 https://www.wikidata.org/entity/Q2476248 https://id.loc.gov/authorities/names/n98091314 https://d-nb.info/gnd/174101392 https://id.loc.gov/authorities/names/n87882339

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Robust finite element solvers for distributed hyperbolic optimal control problems. 166-190 2025 180 Comput. Math. Appl. https://doi.org/10.1016/j.camwa.2024.12.012 db/journals/cma/cma180.html#LangerLSY25 streams/journals/cma

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang State-based nested iteration solution of optimal control problems with PDE constraints. 2025 May abs/2505.19062 CoRR https://doi.org/10.48550/arXiv.2505.19062 db/journals/corr/corr2505.html#abs-2505-19062 streams/journals/corr

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang State-based approach to the numerical solution of Dirichlet boundary optimal control problems for the Laplace equation. 2025 July abs/2507.11646 CoRR https://doi.org/10.48550/arXiv.2507.11646 db/journals/corr/corr2507.html#abs-2507-11646 streams/journals/corr

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Numerical solution of elliptic distributed optimal control problems with boundary value tracking. 2025 October abs/2510.27336 CoRR https://doi.org/10.48550/arXiv.2510.27336 db/journals/corr/corr2510.html#abs-2510-27336 streams/journals/corr

Sven Beuchler Bernhard Endtmayer Ulrich Langer Andreas Schafelner Thomas Wick A 5D concept for space-time optimal control problems with application to simplified Carreau flow. 2025 November abs/2511.09086 CoRR https://doi.org/10.48550/arXiv.2511.09086 db/journals/corr/corr2511.html#abs-2511-09086 streams/journals/corr

Ulrich Langer Olaf Steinbach Huidong Yang Robust space-time finite element methods for parabolic distributed optimal control problems with energy regularization. 24 2024 April 50 Adv. Comput. Math. 2 https://doi.org/10.1007/s10444-024-10123-w db/journals/adcm/adcm50.html#LangerSY24

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang An adaptive finite element method for distributed elliptic optimal control problems with variable energy regularization. 1-14 2024 160 Comput. Math. Appl. https://doi.org/10.1016/j.camwa.2024.02.006 db/journals/cma/cma160.html#LangerLSY24

Bernhard Endtmayer Ulrich Langer Andreas Schafelner Goal-oriented adaptive space-time finite element methods for regularized parabolic p-Laplace problems. 286-297 2024 167 Comput. Math. Appl. https://doi.org/10.1016/j.camwa.2024.05.017 db/journals/cma/cma167.html#EndtmayerLS24

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Mass-lumping discretization and solvers for distributed elliptic optimal control problems. 2024 October 31 Numer. Linear Algebra Appl. 5 https://doi.org/10.1002/nla.2564 db/journals/nla/nla31.html#LangerLSY24 streams/journals/nla

Daniel Jodlbauer Ulrich Langer Thomas Wick Walter Zulehner Matrix-Free Monolithic Multigrid Methods for Stokes and Generalized Stokes Problems. 1599- 2024 46 SIAM J. Sci. Comput. 3 https://doi.org/10.1137/22m1504184 db/journals/siamsc/siamsc46.html#JodlbauerLWZ24

Bernhard Endtmayer Ulrich Langer Thomas Richter 0003 Andreas Schafelner Thomas Wick A Posteriori Single- and Multi-Goal Error Control and Adaptivity for Partial Differential Equations. 2024 abs/2404.01738 CoRR https://doi.org/10.48550/arXiv.2404.01738 db/journals/corr/corr2404.html#abs-2404-01738

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Robust finite element solvers for distributed hyperbolic optimal control problems. 2024 abs/2404.03756 CoRR https://doi.org/10.48550/arXiv.2404.03756 db/journals/corr/corr2404.html#abs-2404-03756

Ulrich Langer Olaf Steinbach Recent Advances in Boundary Element Methods. 297-300 2023 April 23 Comput. Methods Appl. Math. 2 https://doi.org/10.1515/cmam-2023-0037 db/journals/cmam/cmam23.html#LangerS23

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Robust Finite Element Discretization and Solvers for Distributed Elliptic Optimal Control Problems. 989-1006 2023 October 23 Comput. Methods Appl. Math. 4 https://doi.org/10.1515/cmam-2022-0138 db/journals/cmam/cmam23.html#LangerLSY23

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Robust Iterative Solvers for Algebraic Systems Arising from Elliptic Optimal Control Problems. 35-43 2023 LSSC https://doi.org/10.1007/978-3-031-56208-2_50 conf/lssc/2023 db/conf/lssc/lssc2023.html#LangerLSY23

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Mass-lumping discretization and solvers for distributed elliptic optimal control problems. 2023 abs/2304.14664 CoRR https://doi.org/10.48550/arXiv.2304.14664 db/journals/corr/corr2304.html#abs-2304-14664

Bernhard Endtmayer Ulrich Langer Andreas Schafelner Goal-Oriented Adaptive Space-Time Finite Element Methods for Regularized Parabolic p-Laplace Problems. 2023 abs/2306.07167 CoRR https://doi.org/10.48550/arXiv.2306.07167 db/journals/corr/corr2306.html#abs-2306-07167

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Parallel iterative solvers for discretized reduced optimality systems. 2023 abs/2312.12282 CoRR https://doi.org/10.48550/arXiv.2312.12282 db/journals/corr/corr2312.html#abs-2312-12282

Ulrich Langer Olaf Steinbach Huidong Yang Robust Discretization and Solvers for Elliptic Optimal Control Problems with Energy Regularization. 97-111 2022 22 Comput. Methods Appl. Math. 1 https://doi.org/10.1515/cmam-2021-0169 db/journals/cmam/cmam22.html#LangerSY22

Ulrich Langer Andreas Schafelner Adaptive space-time finite element methods for parabolic optimal control problems. 247-266 2022 30 J. Num. Math. 4 https://doi.org/10.1515/jnma-2021-0059 db/journals/jnma/jnma30.html#LangerS22

Daniel Jodlbauer Ulrich Langer Thomas Wick Walter Zulehner Matrix-free Monolithic Multigrid Methods for Stokes and Generalized Stokes Problems. 2022 abs/2205.15770 CoRR https://doi.org/10.48550/arXiv.2205.15770 db/journals/corr/corr2205.html#abs-2205-15770

Ulrich Langer Olaf Steinbach Huidong Yang Robust space-time finite element error estimates for parabolic distributed optimal control problems with energy regularization. 2022 abs/2206.06455 CoRR https://doi.org/10.48550/arXiv.2206.06455 db/journals/corr/corr2206.html#abs-2206-06455

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang Robust finite element discretization and solvers for distributed elliptic optimal control problems. 2022 abs/2207.04664 CoRR https://doi.org/10.48550/arXiv.2207.04664 db/journals/corr/corr2207.html#abs-2207-04664

Ulrich Langer Richard Löscher Olaf Steinbach Huidong Yang An adaptive finite element method for distributed elliptic optimal control problems with variable energy regularization. 2022 abs/2209.08811 CoRR https://doi.org/10.48550/arXiv.2209.08811 db/journals/corr/corr2209.html#abs-2209-08811

Bernhard Endtmayer Ulrich Langer Thomas Wick Reliability and Efficiency of DWR-Type A Posteriori Error Estimates with Smart Sensitivity Weight Recovering. 351-371 2021 21 Comput. Methods Appl. Math. 2 https://doi.org/10.1515/cmam-2020-0036 db/journals/cmam/cmam21.html#EndtmayerLW21

Ulrich Langer Olaf Steinbach Fredi Tröltzsch Huidong Yang Space-Time Finite Element Discretization of Parabolic Optimal Control Problems with Energy Regularization. 675-695 2021 59 SIAM J. Numer. Anal. 2 https://doi.org/10.1137/20M1332980 db/journals/siamnum/siamnum59.html#LangerSTY21

Ulrich Langer Olaf Steinbach Fredi Tröltzsch Huidong Yang Unstructured Space-Time Finite Element Methods for Optimal Control of Parabolic Equations. A744-A771 2021 43 SIAM J. Sci. Comput. 2 https://doi.org/10.1137/20M1330452 db/journals/siamsc/siamsc43.html#LangerSTY21

Ulrich Langer Marco Zank Efficient Direct Space-Time Finite Element Solvers for Parabolic Initial-Boundary Value Problems in Anisotropic Sobolev Spaces. A2714-A2736 2021 43 SIAM J. Sci. Comput. 4 https://doi.org/10.1137/20M1358128 db/journals/siamsc/siamsc43.html#LangerZ21

Ulrich Langer Andreas Schafelner Simultaneous Space-Time Finite Element Methods for Parabolic Optimal Control Problems. 314-321 2021 LSSC https://doi.org/10.1007/978-3-030-97549-4_36 conf/lssc/2021 db/conf/lssc/lssc2021.html#LangerS21

Ulrich Langer Olaf Steinbach Huidong Yang Robust discretization and solvers for elliptic optimal control problems with energy regularization. 2021 abs/2102.03515 CoRR https://arxiv.org/abs/2102.03515 db/journals/corr/corr2102.html#abs-2102-03515

Ulrich Langer Andreas Schafelner Simultaneous space-time finite element methods for parabolic optimal control problems. 2021 abs/2103.01688 CoRR https://arxiv.org/abs/2103.01688 db/journals/corr/corr2103.html#abs-2103-01688

Ulrich Langer Andreas Schafelner Space-time hexahedral finite element methods for parabolic evolution problems. 2021 abs/2103.13835 CoRR https://arxiv.org/abs/2103.13835 db/journals/corr/corr2103.html#abs-2103-13835

Ulrich Langer Olaf Steinbach Fredi Tröltzsch Huidong Yang Space-time finite element methods for the initial temperature reconstruction. 2021 abs/2103.16699 CoRR https://arxiv.org/abs/2103.16699 db/journals/corr/corr2103.html#abs-2103-16699

Bernhard Endtmayer Ulrich Langer Ira Neitzel Thomas Wick Winnifried Wollner Multigoal-oriented optimal control problems with nonlinear PDE constraints. 3001-3026 2020 79 Comput. Math. Appl. 10 https://doi.org/10.1016/j.camwa.2020.01.005 db/journals/cma/cma79.html#EndtmayerLNWW20

Ulrich Langer Andreas Schafelner Adaptive Space-Time Finite Element Methods for Non-autonomous Parabolic Problems with Distributional Sources. 677-693 2020 20 Comput. Methods Appl. Math. 4 https://doi.org/10.1515/cmam-2020-0042 db/journals/cmam/cmam20.html#LangerS20

Bernhard Endtmayer Ulrich Langer Thomas Wick Two-Side a Posteriori Error Estimates for the Dual-Weighted Residual Method. A371-A394 2020 42 SIAM J. Sci. Comput. 1 https://doi.org/10.1137/18M1227275 db/journals/siamsc/siamsc42.html#EndtmayerLW20

Bernhard Endtmayer Ulrich Langer Thomas Wick Reliability and efficiency of DWR-type a posteriori error estimates with smart sensitivity weight recovering. 2020 abs/2003.08999 CoRR https://arxiv.org/abs/2003.08999 db/journals/corr/corr2003.html#abs-2003-08999

Ulrich Langer Andreas Schafelner Adaptive space-time finite element methods for non-autonomous parabolic problems with distributional sources. 2020 abs/2003.09248 CoRR https://arxiv.org/abs/2003.09248 db/journals/corr/corr2003.html#abs-2003-09248

Ulrich Langer Olaf Steinbach Fredi Tröltzsch Huidong Yang Unstructured Space-Time Finite Element Methods for Optimal Sparse Control of Parabolic Equations. 2020 abs/2003.14141 CoRR https://arxiv.org/abs/2003.14141 db/journals/corr/corr2003.html#abs-2003-14141

Ulrich Langer Olaf Steinbach Fredi Tröltzsch Huidong Yang Unstructured space-time finite element methods for optimal control of parabolic equations. 2020 abs/2004.02014 CoRR https://arxiv.org/abs/2004.02014 db/journals/corr/corr2004.html#abs-2004-02014

Ulrich Langer Olaf Steinbach Fredi Tröltzsch Huidong Yang Space-time finite element discretization of parabolic optimal control problems with energy regularization. 2020 abs/2004.09504 CoRR https://arxiv.org/abs/2004.09504 db/journals/corr/corr2004.html#abs-2004-09504

Daniel Jodlbauer Ulrich Langer Thomas Wick Parallel matrix-free higher-order finite element solvers for phase-field fracture problems. 2020 abs/2005.00331 CoRR https://arxiv.org/abs/2005.00331 db/journals/corr/corr2005.html#abs-2005-00331

Ulrich Langer Marco Zank Efficient Direct Space-Time Finite Element Solvers for Parabolic Initial-Boundary Value Problems in Anisotropic Sobolev Spaces. 2020 abs/2008.01996 CoRR https://arxiv.org/abs/2008.01996 db/journals/corr/corr2008.html#abs-2008-01996

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. 2641-2671 2019 78 Comput. Math. Appl. 8 https://doi.org/10.1016/j.camwa.2019.04.009 db/journals/cma/cma78.html#LangerMR19

Christoph Hofer Ulrich Langer Ioannis Toulopoulos Isogeometric analysis on non-matching segmentation: discontinuous Galerkin techniques and efficient solvers. 297-336 2019 October 61 J. Appl. Math. Comput. 1-2 https://doi.org/10.1007/s12190-019-01252-3 db/journals/jamc/jamc61.html#HoferLT19

Bernhard Endtmayer Ulrich Langer Thomas Wick Multigoal-oriented error estimates for non-linear problems. 215-236 2019 27 J. Num. Math. 4 https://doi.org/10.1515/jnma-2018-0038 https://www.wikidata.org/entity/Q129435475 db/journals/jnma/jnma27.html#EndtmayerLW19

Christoph Hofer Ulrich Langer Martin Neumüller Rainer Schneckenleitner Parallel and Robust Preconditioning for Space-Time Isogeometric Analysis of Parabolic Evolution Problems. A1793-A1821 2019 41 SIAM J. Sci. Comput. 3 https://doi.org/10.1137/18M1208794 https://www.wikidata.org/entity/Q127752816 db/journals/siamsc/siamsc41.html#HoferLNS19

Bernhard Endtmayer Ulrich Langer Jan Philipp Thiele Thomas Wick Hierarchical DWR Error Estimates for the Navier-Stokes Equations: h and p Enrichment. 363-372 2019 ENUMATH https://doi.org/10.1007/978-3-030-55874-1_35 conf/enumath/2019 db/conf/enumath/enumath2019.html#EndtmayerLTW19 Ulrich Langer Andreas Schafelner Space-Time Finite Element Methods for Parabolic Initial-Boundary Value Problems with Non-smooth Solutions. 593-600 2019 LSSC https://doi.org/10.1007/978-3-030-41032-2_68 conf/lssc/2019 db/conf/lssc/lssc2019.html#LangerS19

Bernhard Endtmayer Ulrich Langer Jan Philipp Thiele Thomas Wick Hierarchical DWR Error Estimates for the Navier Stokes Equation: h and p Enrichment. 2019 abs/1912.04819 CoRR http://arxiv.org/abs/1912.04819 db/journals/corr/corr1912.html#abs-1912-04819

Ulrich Langer Huidong Yang Numerical simulation of fluid-structure interaction problems with hyperelastic models: A monolithic approach. 186-208 2018 145 Math. Comput. Simul. https://doi.org/10.1016/j.matcom.2016.07.008 db/journals/mcs/mcs145.html#LangerY18

Ulrich Langer Martin Neumüller Ioannis Toulopoulos Multipatch Space-Time Isogeometric Analysis of Parabolic Diffusion Problems. 21-32 2017 LSSC https://doi.org/10.1007/978-3-319-73441-5_2 conf/lssc/2017 db/conf/lssc/lssc2017.html#LangerNT17 Ulrich Langer Svetlana Matculevich Sergey I. Repin Functional Type Error Control for Stabilised Space-Time IgA Approximations to Parabolic Problems. 55-65 2017 LSSC https://doi.org/10.1007/978-3-319-73441-5_5 https://www.wikidata.org/entity/Q109594280 conf/lssc/2017 db/conf/lssc/lssc2017.html#LangerMR17

Ulrich Langer Svetlana Matculevich Sergey I. Repin Guaranteed error control bounds for the stabilised space-time IgA approximations to parabolic problems. 2017 abs/1712.06017 CoRR http://arxiv.org/abs/1712.06017 db/journals/corr/corr1712.html#abs-1712-06017

Christoph Hofer Ulrich Langer Ioannis Toulopoulos Discontinuous Galerkin Isogeometric Analysis of Elliptic Diffusion Problems on Segmentations with Gaps. 2016 38 SIAM J. Sci. Comput. 6 https://doi.org/10.1137/15M1048574 db/journals/siamsc/siamsc38.html#HoferLT16

Vadim Glebovich Korneev Ulrich Langer Dirichlet-Dirichlet Domain Decomposition Methods for Elliptic Problems - <i>h</i> and <i>hp</i> Finite Element Discretizations Dirichlet-Dirichlet Domain Decomposition Methods for Elliptic Problems WorldScientific 2015 1-484 9789814578455 9789814578462 9789814578479 https://doi.org/10.1142/9035

Ulrich Langer Angelos Mantzaflaris Stephen Edward Moore Ioannis Toulopoulos Mesh grading in isogeometric analysis. 1685-1700 2015 70 Comput. Math. Appl. 7 https://doi.org/10.1016/j.camwa.2015.03.011 db/journals/cma/cma70.html#LangerMMT15

Ulrich Langer Sergey I. Repin Monika Wolfmayr Functional A Posteriori Error Estimates for Parabolic Time-Periodic Boundary Value Problems. 353-372 2015 15 Comput. Methods Appl. Math. 3 https://doi.org/10.1515/cmam-2015-0012 https://www.wikidata.org/entity/Q110234280 db/journals/cmam/cmam15.html#LangerRW15

Ulrich Langer Editorial. 415 2015 15 Comput. Methods Appl. Math. 4 https://doi.org/10.1515/cmam-2015-0027 db/journals/cmam/cmam15.html#Langer15

Ulrich Langer Ioannis Toulopoulos Analysis of multipatch discontinuous Galerkin IgA approximations to elliptic boundary value problems. 217-233 2015 17 Comput. Vis. Sci. 5 https://doi.org/10.1007/s00791-016-0262-6 db/journals/comvis/comvis17.html#LangerT15

Ulrich Langer Huidong Yang Partitioned solution algorithms for fluid-structure interaction problems with hyperelastic models. 47-61 2015 276 J. Comput. Appl. Math. https://doi.org/10.1016/j.cam.2014.08.007 db/journals/jcam/jcam276.html#LangerY15

Peter Gangl Ulrich Langer Antoine Laurain Houcine Meftahi Kevin Sturm Shape Optimization of an Electric Motor Subject to Nonlinear Magnetostatics. 2015 37 SIAM J. Sci. Comput. 6 https://doi.org/10.1137/15100477X db/journals/siamsc/siamsc37.html#GanglLLMS15

Ulrich Langer Huidong Yang Algebraic Multigrid Based Preconditioners for Fluid-Structure Interaction and Its Related Sub-problems. 91-98 2015 LSSC https://doi.org/10.1007/978-3-319-26520-9_9 conf/lssc/2015 db/conf/lssc/lssc2015.html#LangerY15 Angelos Mantzaflaris Bert Jüttler Boris N. Khoromskij Ulrich Langer Matrix Generation in Isogeometric Analysis by Low Rank Tensor Approximation. 321-340 2014 Curves and Surfaces https://doi.org/10.1007/978-3-319-22804-4_24 conf/cas/2014 db/conf/cas/cas2014.html#MantzaflarisJKL14

Markus Kollmann Michael Kolmbauer Ulrich Langer Monika Wolfmayr Walter Zulehner A robust finite element solver for a multiharmonic parabolic optimal control problem. 469-486 2013 65 Comput. Math. Appl. 3 https://doi.org/10.1016/j.camwa.2012.06.012 db/journals/cma/cma65.html#KollmannKLWZ13

Michael Kolmbauer Ulrich Langer A Robust Preconditioned MinRes Solver for Time-periodic Eddy Current Problems. 1-20 2013 13 Comput. Methods Appl. Math. 1 https://doi.org/10.2478/cmam-2012-0023 db/journals/cmam/cmam13.html#KolmbauerL13

Ulrich Langer Monika Wolfmayr Multiharmonic finite element analysis of a time-periodic parabolic optimal control problem. 265-300 2013 21 J. Num. Math. 4 https://doi.org/10.1515/jnum-2013-0011 db/journals/jnma/jnma21.html#LangerW13

Michael Kolmbauer Ulrich Langer A Robust FEM-BEM Solver for Time-Harmonic Eddy Current Problems. 297-304 2013 Domain Decomposition Methods in Science and Engineering XX https://doi.org/10.1007/978-3-642-35275-1_34 series/lncse/91 db/series/lncse/lncse91.html#KolmbauerL13

Vadim G. Korneev Yuri Kuznetsov Ulrich Langer Aleksandr M. Matsokin Editorial. 367-368 2012 12 Comput. Methods Appl. Math. 4 https://doi.org/10.2478/cmam-2012-0032 db/journals/cmam/cmam12.html#KorneevKLM12

Peter Gangl Ulrich Langer Topology optimization of electric machines based on topological sensitivity analysis. 345-354 2012 15 Comput. Vis. Sci. 6 https://doi.org/10.1007/s00791-014-0219-6 db/journals/comvis/comvis15.html#GanglL12

Michael Kolmbauer Ulrich Langer A Robust Preconditioned MinRes Solver for Distributed Time-Periodic Eddy Current Optimal Control Problems. 2012 34 SIAM J. Sci. Comput. 6 https://doi.org/10.1137/110842533 db/journals/siamsc/siamsc34.html#KolmbauerL12

Clemens Hofreither Ulrich Langer Clemens Pechstein A Non-standard Finite Element Method Based on Boundary Integral Operators. 28-39 2011 LSSC https://doi.org/10.1007/978-3-642-29843-1_3 conf/lssc/2011 db/conf/lssc/lssc2011.html#HofreitherLP11

Dylan M. Copeland Ulrich Langer Domain decomposition solvers for nonlinear multiharmonic finite element equations. 157-175 2010 18 J. Num. Math. 3 https://doi.org/10.1515/jnum.2010.008 db/journals/jnma/jnma18.html#CopelandL10

Clemens Hofreither Ulrich Langer Satyendra K. Tomar Boundary Element Simulation of Linear Water Waves in a Model Basin. 132-139 2009 LSSC https://doi.org/10.1007/978-3-642-12535-5_14 conf/lssc/2009 db/conf/lssc/lssc2009.html#HofreitherLT09

Sven Beuchler Tino Eibner Ulrich Langer Primal and Dual Interface Concentrated Iterative Substructuring Methods. 2818-2842 2008 46 SIAM J. Numer. Anal. 6 https://doi.org/10.1137/070691723 db/journals/siamnum/siamnum46.html#BeuchlerEL08

Ulrich Langer Günther Of Olaf Steinbach Walter Zulehner Inexact Data-Sparse Boundary Element Tearing and Interconnecting Methods. 290-314 2007 29 SIAM J. Sci. Comput. 1 https://doi.org/10.1137/050636243 db/journals/siamsc/siamsc29.html#LangerOSZ07

Huidong Yang Walter Zulehner Ulrich Langer Markus Baumgartner A robust PDE solver for the 3D Stokes/Navier-Stokes systems on the grid environment. 145-152 2007 conf/grid/2007 GRID https://doi.org/10.1109/GRID.2007.4354127 https://doi.ieeecomputersociety.org/10.1109/GRID.2007.4354127 http://dl.acm.org/citation.cfm?id=1513511 db/conf/grid/grid2007.html#YangZLB07 Ulrich Langer Walter Zulehner Huidong Yang Markus Baumgartner GStokes: A Grid-enabled Solver for the 3D Stokes/Navier-Stokes System on Hybrid Meshes. 377-382 2007 ISPDC https://doi.org/10.1109/ISPDC.2007.26 https://doi.ieeecomputersociety.org/10.1109/ISPDC.2007.26 conf/ispdc/2007 db/conf/ispdc/ispdc2007.html#LangerZYB07

Florian Bachinger Ulrich Langer Joachim Schöberl Numerical analysis of nonlinear multiharmonic eddy current problems. 593-616 2005 100 Numerische Mathematik 4 https://doi.org/10.1007/s00211-005-0597-2 db/journals/nm/nm100.html#BachingerLS05

Ulrich Langer D. Pusch Comparison of Geometrical and Algebraic Multigrid Preconditioners for Data-Sparse Boundary Element Matrices. 130-137 2005 conf/lssc/2005 LSSC https://doi.org/10.1007/11666806_13 db/conf/lssc/lssc2005.html#LangerP05

Ulrich Langer Olaf Steinbach Boundary Element Tearing and Interconnecting Methods. 205-228 2003 71 Computing 3 https://doi.org/10.1007/s00607-003-0018-2 db/journals/computing/computing71.html#LangerS03

Franz Winkler 0001 Ulrich Langer Symbolic and Numerical Scientific Computation, Second International Conference, SNSC 2001, Hagenberg, Austria, September 10-11, 2001, Revised Papers SNSC Lecture Notes in Computer Science 2630 Springer 2003 3-540-40554-2 https://doi.org/10.1007/3-540-45084-X db/conf/snsc/snsc2001.html

Gundolf Haase Ulrich Langer Stefan Reitzinger Joachim Schöberl Algebraic multigrid methods based on element preconditioning. 575-598 2001 78 Int. J. Comput. Math. 4 https://doi.org/10.1080/00207160108805133 db/journals/ijcm/ijcm78.html#HaaseLRS01

Gundolf Haase Michael Kuhn 0009 Ulrich Langer Parallel multigrid 3D Maxwell solvers. 761-775 2001 27 Parallel Comput. 6 db/journals/pc/pc27.html#HaaseKL01 https://doi.org/10.1016/S0167-8191(00)00106-X

Ulrich Langer Stefan Reitzinger Josef Schicho Symbolic Methods for the Element Preconditioning Technique. 293-308 https://doi.org/10.1007/3-540-45084-X_15 2001 conf/snsc/2001 SNSC db/conf/snsc/snsc2001.html#LangerRS01

Ulrich Langer Editorial. 131 1997 4 Numer. Linear Algebra Appl. 3 https://doi.org/10.1002/(SICI)1099-1506(199705/06)4:3<131::AID-NLA115>3.0.CO;2-Z db/journals/nla/nla4.html#Langer97

Gundolf Haase Ulrich Langer Arnd Meyer The approximate Dirichlet Domain Decomposition method. Part I: An algebraic approach. 137-151 1991 47 Computing 2 https://doi.org/10.1007/BF02253431 db/journals/computing/computing47.html#HaaseLM91

Gundolf Haase Ulrich Langer Arnd Meyer The approximate Dirichlet Domain Decomposition method. Part II: Applications to 2nd-order Elliptic B.V.P.s. 153-167 1991 47 Computing 2 https://doi.org/10.1007/BF02253432 db/journals/computing/computing47.html#HaaseLM91a

Florian Bachinger Markus Baumgartner Sven Beuchler Dylan M. Copeland Tino Eibner Bernhard Endtmayer Peter Gangl Gundolf Haase Christoph Hofer Clemens Hofreither Daniel Jodlbauer Bert Jüttler Boris N. Khoromskij Markus Kollmann Michael Kolmbauer Vadim G. KorneevVadim Glebovich Korneev Michael Kuhn 0009 Yuri Kuznetsov Svetlana KyasSvetlana Matculevich Antoine Laurain Richard Löscher Angelos Mantzaflaris Aleksandr M. Matsokin Houcine Meftahi Arnd Meyer Stephen Edward Moore Ira Neitzel Martin Neumüller Günther Of Clemens Pechstein D. Pusch Stefan Reitzinger Sergey I. Repin Thomas Richter 0003 Andreas Schafelner Josef Schicho Rainer Schneckenleitner Joachim Schöberl Olaf Steinbach Kevin Sturm Jan Philipp Thiele Satyendra K. Tomar Ioannis Toulopoulos Fredi Tröltzsch Thomas Wick Franz Winkler 0001 Monika Wolfmayr Winnifried Wollner Huidong Yang Marco Zank Walter Zulehner