Fredi Tröltzsch

58 papers Misc 1Journal 50Unranked 4
YearRankTypeTitle / Venue / Authors
2021 J jnl
Space-Time Finite Element Discretization of Parabolic Optimal Control Problems with Energy Regularization.
SIAM J. Numer. Anal.
Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang
2021 J jnl
Space-time finite element methods for the initial temperature reconstruction.
CoRR
Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang
2021 J jnl
Unstructured Space-Time Finite Element Methods for Optimal Control of Parabolic Equations.
SIAM J. Sci. Comput.
Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang
2020 J jnl
Input Reconstruction by Feedback Control for the Schlögl and FitzHugh-Nagumo Equations.
Int. J. Appl. Math. Comput. Sci.
Vyacheslav Maksimov, Fredi Tröltzsch
2020 J jnl
On Optimal Control Problems with Controls Appearing Nonlinearly in an Elliptic State Equation.
SIAM J. Control. Optim.
Eduardo Casas, Fredi Tröltzsch
2020 J jnl
Space-time finite element discretization of parabolic optimal control problems with energy regularization.
CoRR
Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang
2020 J jnl
Unstructured Space-Time Finite Element Methods for Optimal Sparse Control of Parabolic Equations.
CoRR
Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang
2020 J jnl
Unstructured space-time finite element methods for optimal control of parabolic equations.
CoRR
Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang
2018 J jnl
Measure Control of a Semilinear Parabolic Equation with a Nonlocal Time Delay.
SIAM J. Control. Optim.
Eduardo Casas, Mariano Mateos, Fredi Tröltzsch
2018 J jnl
Optimal control of a class of reaction-diffusion systems.
Comput. Optim. Appl.
Eduardo Casas, Christopher Ryll, Fredi Tröltzsch
2016 J jnl
Optimization of nonlocal time-delayed feedback controllers.
Comput. Optim. Appl.
Peter Nestler, Eckehard Schöll, Fredi Tröltzsch
2015 J jnl
An adaptive numerical method for semi-infinite elliptic control problems based on error estimates.
Optim. Methods Softw.
Pedro Merino, Ira Neitzel, Fredi Tröltzsch
2015 J jnl
Boundary feedback stabilization of the Schlögl system.
Autom.
Martin Gugat, Fredi Tröltzsch
2015 — conf
Modeling and Control of Low-Frequency Electromagnetic Fields in Multiply Connected Conductors.
System Modelling and Optimization
Fredi Tröltzsch, Alberto Valli
2015 J jnl
Second Order and Stability Analysis for Optimal Sparse Control of the FitzHugh-Nagumo Equation.
SIAM J. Control. Optim.
Eduardo Casas, Christopher Ryll, Fredi Tröltzsch
2014 J jnl
On Two Optimal Control Problems for Magnetic Fields.
Comput. Methods Appl. Math.
Serge Nicaise, Simon Stingelin, Fredi Tröltzsch
2014 J jnl
On some optimal control problems for electrical circuits.
Int. J. Circuit Theory Appl.
Kristof Altmann, Simon Stingelin, Fredi Tröltzsch
2014 J jnl
Second-Order and Stability Analysis for State-Constrained Elliptic Optimal Control Problems with Sparse Controls.
SIAM J. Control. Optim.
Eduardo Casas, Fredi Tröltzsch
2013 J jnl
Erratum to: On the optimal control of the Schlögl-model.
Comput. Optim. Appl.
Rico Buchholz, Harald Engel, Eileen Kammann, Fredi Tröltzsch
2013 J jnl
On the optimal control of the Schlögl-model.
Comput. Optim. Appl.
Rico Buchholz, Harald Engel, Eileen Kammann, Fredi Tröltzsch
2013 J jnl
Sparse Optimal Control of the Schlögl and FitzHugh-Nagumo Systems.
Comput. Methods Appl. Math.
Eduardo Casas, Christopher Ryll, Fredi Tröltzsch
2013 — ed.
System Modeling and Optimization - 25th IFIP TC 7 Conference, CSMO 2011, Berlin, Germany, September 12-16, 2011, Revised Selected Papers
System Modeling and Optimization
Dietmar Hömberg, Fredi Tröltzsch
2012 J jnl
A general theorem on error estimates with application to a quasilinear elliptic optimal control problem.
Comput. Optim. Appl.
Eduardo Casas, Fredi Tröltzsch
2012 J jnl
Introduction.
Comput. Optim. Appl.
Fredi Tröltzsch, Arnd Rösch
2012 — ch.
Numerical Analysis of State-constrained Optimal Control Problems for PDEs.
Constrained Optimization and Optimal Control for Partial Differential Equations
Ira Neitzel, Fredi Tröltzsch
2012 J jnl
Second Order Analysis for Optimal Control Problems: Improving Results Expected From Abstract Theory.
SIAM J. Optim.
Eduardo Casas, Fredi Tröltzsch
2011 Misc conf
A posteriori error estimation for nonlinear parabolic boundary control.
MMAR
Eileen Kammann, Fredi Tröltzsch
2011 J jnl
Optimal Control of Three-Dimensional State-Constrained Induction Heating Problems with Nonlocal Radiation Effects.
SIAM J. Control. Optim.
Pierre-Étienne Druet, Olaf Klein, Jürgen Sprekels, Fredi Tröltzsch, Irwin Yousept
2011 J jnl
Some aspects of reachability for parabolic boundary control problems with control constraints.
Comput. Optim. Appl.
Vili Dhamo, Fredi Tröltzsch
2009 J jnl
A regularization method for the numerical solution of elliptic boundary control problems with pointwise state constraints.
Comput. Optim. Appl.
Fredi Tröltzsch, Irwin Yousept
2009 J jnl
Editorial.
Comput. Optim. Appl.
Fredi Tröltzsch
2009 J jnl
First- and Second-Order Optimality Conditions for a Class of Optimal Control Problems with Quasilinear Elliptic Equations.
SIAM J. Control. Optim.
Eduardo Casas, Fredi Tröltzsch
2009 — conf
On Finite Element Error Estimates for Optimal Control Problems with Elliptic PDEs.
LSSC
Fredi Tröltzsch
2009 J jnl
POD a-posteriori error estimates for linear-quadratic optimal control problems.
Comput. Optim. Appl.
Fredi Tröltzsch, Stefan Volkwein
2008 J jnl
Editorial.
Comput. Optim. Appl.
Luis Alberto Fernandez, William W. Hager, Fredi Tröltzsch
2008 J jnl
Mesh-independence of semismooth Newton methods for Lavrentiev-regularized state constrained nonlinear optimal control problems.
Numerische Mathematik
Michael Hintermüller, Fredi Tröltzsch, Irwin Yousept
2008 J jnl
Sufficient Second-Order Optimality Conditions for Semilinear Control Problems with Pointwise State Constraints.
SIAM J. Optim.
Eduardo Casas, Juan Carlos de los Reyes, Fredi Tröltzsch
2008 J jnl
The convergence of an interior point method for an elliptic control problem with mixed control-state constraints.
Comput. Optim. Appl.
Uwe Prüfert, Fredi Tröltzsch, Martin Weiser
2007 J jnl
On Regularity of Solutions and Lagrange Multipliers of Optimal Control Problems for Semilinear Equations with Mixed Pointwise Control-State Constraints.
SIAM J. Control. Optim.
Arnd Rösch, Fredi Tröltzsch
2007 J jnl
On two numerical methods for state-constrained elliptic control problems.
Optim. Methods Softw.
Christian Meyer, Uwe Prüfert, Fredi Tröltzsch
2007 J jnl
Optimal Control of the Stationary Navier--Stokes Equations with Mixed Control-State Constraints.
SIAM J. Control. Optim.
Juan Carlos de los Reyes, Fredi Tröltzsch
2006 J jnl
Existence of Regular Lagrange Multipliers for a Nonlinear Elliptic Optimal Control Problem with Pointwise Control-State Constraints.
SIAM J. Control. Optim.
Arnd Rösch, Fredi Tröltzsch
2006 J jnl
Optimal Control of PDEs with Regularized Pointwise State Constraints.
Comput. Optim. Appl.
Christian Meyer, Arnd Rösch, Fredi Tröltzsch
2006 J jnl
Optimal Control of a Semilinear PDE with Nonlocal Radiation Interface Conditions.
SIAM J. Control. Optim.
Christian Meyer, Peter Philip, Fredi Tröltzsch
2006 J jnl
Sufficient Second-Order Optimality Conditions for an Elliptic Optimal Control Problem with Pointwise Control-State Constraints.
SIAM J. Optim.
Arnd Rösch, Fredi Tröltzsch
2005 J jnl
Error Estimates for the Numerical Approximation of Boundary Semilinear Elliptic Control Problems.
Comput. Optim. Appl.
Eduardo Casas, Mariano Mateos, Fredi Tröltzsch
2005 J jnl
Regular Lagrange Multipliers for Control Problems with Mixed Pointwise Control-State Constraints.
SIAM J. Optim.
Fredi Tröltzsch
2004 J jnl
On convergence of a receding horizon method for parabolic boundary control.
Optim. Methods Softw.
Fredi Tröltzsch, Daniel Wachsmuth
2003 J jnl
Sufficient Second-Order Optimality Conditions for a Parabolic Optimal Control Problem with Pointwise Control-State Constraints.
SIAM J. Control. Optim.
Arnd Rösch, Fredi Tröltzsch
2002 J jnl
Error Estimates for the Numerical Approximation of a Semilinear Elliptic Control Problem.
Comput. Optim. Appl.
Nadir Arada, Eduardo Casas, Fredi Tröltzsch
2002 — conf
Error estimates for linear-quadratic elliptic control problems.
Analysis and Optimization of Differential Systems
Eduardo Casas, Fredi Tröltzsch
2002 J jnl
On an Augmented Lagrangian SQP Method for a Class of Optimal Control Problems in Banach Spaces.
Comput. Optim. Appl.
Nadir Arada, Jean-Pierre Raymond, Fredi Tröltzsch
2002 J jnl
Second-Order Necessary and Sufficient Optimality Conditions for Optimization Problems and Applications to Control Theory.
SIAM J. Optim.
Eduardo Casas, Fredi Tröltzsch
2000 J jnl
Second Order Sufficient Optimality Conditions for Some State-constrained Control Problems of Semilinear Elliptic Equations.
SIAM J. Control. Optim.
Eduardo Casas, Fredi Tröltzsch, Andreas Unger
1999 J jnl
On the Lagrange--Newton--SQP Method for the Optimal Control of Semilinear Parabolic Equations.
SIAM J. Control. Optim.
Fredi Tröltzsch
1998 — conf
A Linear Parabolic Boundary Control Problem with Mixed Control-State Constraint.
Control of Distributed Parameter and Stochastic Systems
M. Bergounioux, Fredi Tröltzsch
1997 J jnl
Book reviews.
Math. Methods Oper. Res.
E. Schaich, H. Volger, Fredi Tröltzsch
1982 — —
Notwendige Optimalitätsbedingungen und verallgemeinerte Bang-Bang-Prinzipien für nichtlineare Steuerprobleme bei parabolischen Differentialgleichungen mit Steuer- und Zustandsbeschränkungen.
Fredi Tröltzsch