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Dr. Janusz Ginster

Janusz Ginster
Address:
Weierstrass Institute for Applied Analysis and Stochastics
Mohrenstrasse 39
10117 Berlin, Germany
Phone: +49 (030) 20372-415
Email: ginster(at)wias-berlin.de
ORCID: ORCID logo 0000-0002-7807-1349  

I am a postdoctoral researcher within the group Partial Differential Equations at Weierstrass Institute of Applied Analysis and Stochastics.

Scientific interests

  • Variational methods for (non-convex) minimization problems, e.g. Gamma-convergence, scaling laws,...
  • Materials Science: elasticity, plasticity (in particular dislocations), fracture, micromagnetism, phase transitions...
  • Geometric Rigidity

➤ Teaching

  • lecture course "Applications of Convex Integration in PDE" at Humboldt University of Berlin, summer term 2024 (moodle course)
  • lecture course "Principles of Continuum Mechanics" at Humboldt University of Berlin, winter term 2023/24 (moodle course)
  • student seminar "Applied Analysis: Gamma-Convergence and Applications" at Humboldt University of Berlin, summer term 2023 (moodle course)
  • lecture course "Functions of Bounded Variation" at Humboldt University of Berlin, summer term 2023 (moodle course)
  • lecture course "Nonlinear Functional Analysis and Weak Convergence" at Humboldt University of Berlin, winter term 2022/23 (moodle course)
  • lecture course "Nonlinear Functional Analysis and Weak Convergence" at Humboldt University of Berlin, winter term 2021/22 (moodle course)
  • lecture course "Nonlinear Functional Analysis and Weak Convergence" at Humboldt University of Berlin, winter term 2020/21 (moodle course)
  • lecture course "Functions of Bounded Variation" at Humboldt University of Berlin, summer term 2020 (moodle course)
  • lecture course "21-355 Principles of Real Analysis" at Carnegie Mellon University, spring term 2018
  • lecture course "21-355 Principles of Real Analysis" at Carnegie Mellon University, fall term 2017
  • lecture course "21-355 Principles of Real Analysis" at Carnegie Mellon University, spring term 2017
  • lecture course "21-241 Matrices and Linear Transformations" at Carnegie Mellon University, fall term 2016

➤ Publications and preprints

  1. J. Ginster, A. Pesic, B. Zwicknagl.
    Nonlinear interpolation inequalities for fractional Sobolev norms and pattern formation in biomembranes.
    Preprint.  arXiv:2409.16134.
  2. L. Abel, J. Ginster, B. Zwicknagl.
    A scaling law for a model of epitaxially strained elastic films with dislocations.
    Preprint.  arXiv:2403.13646.
  3. J. Ginster, A. Rueland, A. Tribuzio, B. Zwicknagl .
    On the effect of geometry on scaling laws for a class of martensitic phase transformations.
    Preprint.  arXiv:2405.05927.
  4. J. Ginster, M. Koser, B. Zwicknagl.
    Microstructures in a two-dimensional frustrated spin system: Scaling regimes and a discrete-to-continuum limit.
    Preprint.   arXiv:2406.08339.
  5. J. Ginster, P. Gladbach.
    An anisotropic Poincaré inequality in GSBVp and the limit of strongly anisotropic Mumford-Shah functionals.
    Preprint.   arXiv:2212.10199.
  6. A. Acharya, J. Ginster, S. Singh.
    A hidden convexity of nonlinear elasticity.
    J. Elast. , 2024. [Link] 
  7. J. Ginster.
    The formation of microstructures in singularly perturbed problems with 2, 3, or 4 preferred gradients.
    J. Nonlinear Sci. 34, 2024. [Link] 
  8. J. Ginster, G. Hayrapetyan, A. Pesic, B. Zwicknagl.
    A sharp interface limit for a nonlocal variational model for pattern formation.
    SIAM J. Math. Anal. 56, 2024. [Link] 
  9. J. Ginster, B. Zwicknagl .
    Energy scaling laws for microstructures: from helimagnets to martensites.
    Calc. Var. PDE 63, 2024. [Link] 
  10. J. Ginster, P. Gladbach .
    The Euler-Bernoulli limit of thin brittle linearized elastic beams.
    J. Elast. 156, 2023. [Link] 
  11. J. Ginster, B. Zwicknagl .
    Energy scaling law for a singularly perturbed four-gradient problem in helimagnetism.
    J. Nonlinear Sci. 33, 2023. [Link] 
  12. J. Ginster, A. Acharya .
    Rotations with constant curl are constant.
    Arch. Ration. Mech. Anal. 244, 2022. [Link] 
  13. I. Fonseca, J. Ginster, S. Wojtowytsch .
    On the motion of curved dislocations in three dimensions: Simplified linearized elasticity.
    SIAM J. Math. Anal. 53, 2021. [Link] 
  14. J. Ginster, P. Gladbach .
    Many-particle limits in molecular solvation .
    Arch. Ration. Mech. Anal. 235, 2020. [Link] 
  15. J. Ginster .
    Strain-gradient plasticity as the Gamma-limit of a nonlinear dislocation model with mixed growth .
    SIAM J. Math. Anal. 51, 2019. [Link] 
  16. J. Ginster .
    Plasticity as the Gamma-limit of a two-dimensional dislocation energy: The critical regime without the assumption of well-separateness .
    Arch. Ration. Mech. Anal. 233, 2019. [Link] 
  17. S. Conti, J. Ginster, M. Rumpf .
    A BV functional and its relaxation for joint motion estimation and image sequence recovery .
    ESAIM:M2AN 49, 2015. [Link] 

➤ Short CV

Since September 2024 Member of the group Partial Differential Equations at Weierstrass Institute of Applied Analysis and Stochastics
October 2019 - August 2024 Postdoc in the group of Prof. Barbara Zwicknagl at Humboldt University of Berlin.
January 2019 - September 2019 Postdoc in the group of Prof. Barbara Zwicknagl at Technical University Berlin.
September 2018 - December 2018 Extended travelling in South America, Australia and New Zealand.
September 2016 - August 2018 Postdoc at the Center of Nonlinear Analysis at Carnegie Mellon University, Pittsburgh (USA), under the supervision of Prof. Irene Fonseca and Prof. Giovanni Leoni.
June 2013 - August 2016 PhD-student at the University of Bonn under the supervision of Prof. Stefan Müller.
April 2011 - May 2013 M.Sc. student in Mathematics at the University of Bonn.
September 2010 - February 2011 Exchange student at Universite Pierre et Marie Curie, Paris (France).
October 2007 - September 2010 B.Sc. student in Mathematics at the University of Bonn.


Last modified: 2024-09-27 by Janusz Ginster
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