Academic Records

Aug. 2014 -	Full Professor (W3), University Duisburg-Essen
Jan. 2019 - April 2019	Visiting Professor, Chinese University of Hong Kong
July  2012 - July 2014	Junior Professor (W1), Technical University Darmstadt
Oct. 2009 - June 2012	Postdoc, MATHEON, Technical University of Berlin
Oct. 2008 - Sep. 2009	Guest W2-Professor, University of Augsburg
June 2006 - July 2008	Research Assistant, MATHEON, Technical University of Berlin

Studies

Aug. 2008	Promotion in Mathematik, Technical University of Berlin
Oct. 2005	Diplom in Mathematik, Technical University of Berlin

Scientific Awards

2014	Richard-von-Mises-Preis	GAMM - International Association of Applied Mathematics and Mechanics
2013	Dimitrie Pompeiu Prize	Academy of Romanian Scientists
2006	Erwin Stephan Prize	Technical University of Berlin
2005	Dies Mathematicus Prize	Technical University of Berlin

Editorial Works

Since 2019	Associate Editor for Applicable Analysis
Since 2018	Associate Editor for Results in Applied Mathematics

DFG Research Projects

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Advances in Regularization Theory for Inverse Problems in Banach Spaces
DFG Research Grant (YO 159/5-1), since 2022

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Maxwell Obstacle Problems in Electromagnetic Shielding: Numerical Analysis, Shape Design and Nonlinear Permeability
DFG Research Grant (YO 159/4-1), since 2021

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Multi-Physics Phenomena in High-Temperature Superconductivity: Analysis, Numerics and Optimization
DFG SPP1962 (YO 159/2-2), since 2019

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Optimization of Non-smooth Hyperbolic Maxwell's Equations in Type-II Superconductivity Based on the Bean Critical State Model
DFG SPP1962 (YO 159/2-1), 2017 - 2020 (completed)

Publications

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[44] Maurice Hensel, Malte Winckler and Irwin Yousept: Numerical solutions to hyperbolic Maxwell quasi-variational inequalities in Bean-Kim model for type-II superconductivity [PDF] ESAIM: Mathematical Modelling and Numerical Analysis 8,1385–1411, 2024

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[43] Luis Ammann and Irwin Yousept: Acoustic Full Waveform Inversion via Optimal Control: First- and Second-Order Analysis [PDF] SIAM Journal on Control and Optimization 61:4, 2468-2496, 2023

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[42] Gabrielle Caselli, Maurice Hensel, Irwin Yousept: Quasilinear Variational Inequalities in Ferromagnetic Shielding: Well-Posedness, Regularity, and Optimal Control [PDF] SIAM Journal on Control and Optimization 61:4, 2043-2068, 2023

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[41] Maurice Hensel and Irwin Yousept: Eddy Current Approximation in Maxwell Obstacle Problems [PDF] Interfaces and Free Boundaries, 25, no. 1, 1–36, 2023

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[40] Maurice Hensel and Irwin Yousept: Numerical Analysis for Maxwell Obstacle Problems in Electric Shielding [PDF] SIAM Journal on Numerical Analysis 60(3), 1083-1110, 2022

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[39] De-Han Chen, D. Jiang, Irwin Yousept, Jun Zou: Variational source conditions for inverse Robin and flux problems by partial measurements [PDF] Inverse Problems Imaging 16(2), 283-304, 2022

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[38] Irwin Yousept: Maxwell Quasi-Variational Inequalities in Superconductivity [PDF], ESAIM: Mathematical Modelling and Numerical Analysis 55 (2021) 1545-1568

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[37] De-Han Chen and Irwin Yousept: Variational source conditions in Lp-spaces [PDF], SIAM Journal on Mathematical Analysis 53(3), pp. 2863--2889, 2021

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[36] Yuri Flores Albuquerque, Antoine Laurain, Irwin Yousept: Level set-based shape optimization approach for sharp-interface reconstructions in time-domain full waveform inversion [PDF], SIAM Journal on Applied Mathematics 81(3), pp. 939--964, 2021

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[35] Antoine Laurain, Malte Winckler, Irwin Yousept: Shape optimization for superconductors governed by H(curl)- elliptic variational inequalities [PDF], SIAM Journal on Control and Optimization 59(3), pp. 2247--2272, 2021

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[34] De-Han Chen, Bernd Hofmann, Irwin Yousept: Oversmoothing Tikhonov regularization in Banach spaces [PDF] Inverse Problems  37 (2021) 085007

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[33] Andre Maldonado and Irwin Yousept: Optimal control of non-smooth wave equations Pure and Applied Functional Analysis , to appear 2021

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[32] Agnes Lamacz-Keymling and Irwin Yousept:  High-order homogenization in optimal control by the Bloch wave method [PDF] ESAIM:COCV 27 (2021) 100

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[31] Livia Betz and Irwin Yousept: Optimal control of elliptic variational inequalities with bounded and unbounded operators [PDF] Mathematical Control & Related Fields , 11(3): 479--498, 2021

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[30] Irwin Yousept: Well-posedness theory for electromagnetic obstacle problems [PDF]
Journal of Differential Equations 269(10): 8855--8881, 2020

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[29] Irwin Yousept: Hyperbolic Maxwell Variational Inequalities of the Second Kind [PDF]
ESAIM: COCV 26, Paper No. 34, 2020, https://doi.org/10.1051/cocv/2019015

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[28] Yifeng Xu, Irwin Yousept and Jun Zou: An adaptive edge element approximation of a quasilinear H(curl)-elliptic problem [PDF] Math. Models Methods Appl. Sci. (M3AS) 30, no. 14, 2799–2826, 2020

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[27] Malte Winckler, Irwin Yousept and Jun Zou: Adaptive edge element approximation for H(curl) elliptic variational inequalities of second kind [PDF] SIAM Journal on Numerical Analysis 58(3): 1941-1964, 2020

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[26] Andrew Lam and Irwin Yousept : Consistency of a phase field regularization for an inverse problem governed by a quasilinear Maxwell system [PDF] Inverse Problems 36 045011, 2020

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[25] Malte Winckler and Irwin Yousept: Fully discrete scheme for Bean's critical-state model with temperature effects in superconductivity [PDF] SIAM Journal on Numerical Analysis 57(6): 2685–2706, 2019

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[24] De-Han Chen and Irwin Yousept: Variational Source Condition for Ill-Posed Backward Nonlinear Maxwell's Equations [PDF] Inverse Problems 35(2): 025001, 2019

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[23] Malte Winckler, Irwin Yousept: Maxwell variational inequalities in type-II superconductivity, SPP1962 Special Issue, Birkhäuser, to appear, 2019

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[22] Irwin Yousept:  Hyperbolic Maxwell Variational Inequalities for Bean's Critical-State Model in Type-II Superconductivity [PDF] SIAM Journal on Numerical Analysis 55(5): 2444-2464, 2017

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[21] Irwin Yousept:  Optimal Control of Non-Smooth Hyperbolic Evolution Maxwell Equations in Type-II Superconductivity [PDF] SIAM Journal on Control and Optimization 55(4): 2305-2332, 2017

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[20] Irwin Yousept and Jun Zou:  Edge element method for optimal control of stationary Maxwell system with Gauss Law [PDF] SIAM Journal on Numerical Analysis 55(6): 2787-2810, 2017

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[19] Dirk Pauly and Irwin Yousept:  A Posteriori Error Analysis for the Optimal Control of Magneto-Static Fields
ESAIM: Mathematical Modelling and Numerical Analysis 51(6): 2159-2191, 2017

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[18] Vera Bommer and Irwin Yousept:  Optimal Control of the Full Time-Dependent Maxwell Equations
ESAIM: Mathematical Modelling and Numerical Analysis 50(1):237–261, 2016.

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[17]  Michael Hintermüller; Antoine Laurain; Irwin Yousept:  Shape Sensitivities for an Inverse Problem in Magnetic Induction Tomography Based on the Eddy Current Model Inverse Problems, 31 (2015) 065006 (25pp)

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[16]  Ronald H.W. Hoppe and Irwin Yousept: Adaptive edge element approximation of H(curl)-elliptic optimal control problems with control constraints BIT Numerical Mathematics 55:255-277, 2015

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[15]  J.C. Delos Reyes and Irwin Yousept: Optimal control of electrorheological fluids through the action of electric field Computational Optimization and Applications, DOI 10.1007/s10589-014-9705-5, 2015

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[14] Irwin Yousept: Optimal bilinear control of eddy current equations with grad-div regularization [PDF]
 J. Numer. Math. 23 (1):81–98, 2015

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[13] Irwin Yousept: Optimal Control of Quasilinear H(curl)-Elliptic Partial Differential Equations in Magnetostatic Field Problems [PDF] SIAM Journal on Control and Optimization 51(5), 3624-3651, 2013

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[12] Irwin Yousept: Optimal control of Maxwell's equations with regularized state constraints
Computational Optimization and Applications 52(2), 559-581, 2012

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[11] Irwin Yousept: Finite element analysis of an optimal control problem in the coefficients of time-harmonic eddy current equations Journal of Optimization Theory and Applications 154(3), 879-903, 2012

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[10] Fredi Tröltzsch and Irwin Yousept: PDE-constrained optimization of time-dependent 3D electromagnetic induction heating by alternating voltages [PDF] ESAIM: Mathematical Modelling and Numerical Analysis 46, 709-729, 2012

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[9] P.-E. Druet; O. Klein; J. Sprekels; F. Tröltzsch; I. Yousept
Optimal control of 3D state-constrained induction heating problems with nonlocal radiation effects. 
SIAM Journal on Control and Optimization  49(4): 1707-1736, 2011

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[8] Irwin Yousept: Optimal control of a nonlinear coupled electromagnetic induction heating system with pointwise state constraints Ann. Acad. Rom. Sci. Ser. Math. Appl. 2(1): 45-77, 2010

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[7] Michael Hintermüller and Irwin Yousept: A sensitivity-based extrapolation technique for the numerical solution of state-constrained optimal control problems ESAIM: COCV 16(3): 503-522, 2010

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[6] Christian Meyer and Irwin Yousept: State-constrained optimal control of semilinear elliptic equations with nonlocal radiation interface conditions SIAM Journal on Control and Optimization 48(2): 734-755, 2009

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[5] Christian Meyer and Irwin Yousept: Regularization of state-constrained elliptic optimal control problems with nonlocal radiation interface conditions. Computational Optimization and Applications 44(2): 183-212, 2009

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[4] Juan Carlos Delos Reyes and Irwin Yousept: Regularized state-constrained boundary optimal control of the Navier-Stokes equations Journal of Mathematical Analysis and Applications 356(1): 257-279, 2009

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[3] Fredi Tröltzsch and Irwin Yousept: A regularization method for the numerical solution of elliptic boundary control problems with pointwise state constraints Computational Optimization and Applications 42(1): 43-66, 2009 

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[2] Fredi Tröltzsch and Irwin Yousept: Source representation strategy for optimal boundary control problems with state constraints Zeitschrift für Analysis und ihre Anwendungen (ZAA)  28(2): 189-203, 2009

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[1] Michael Hintermüller and Fredi Tröltzsch and Irwin Yousept: Mesh independence of semismooth Newton methods for Lavrentiev-regularized state constrained optimal control problems. Numerische Mathematik 108(4): 571-603, 2008