Research and Activities

Invited Talks

• Differential-algebraic equations in infinite dimensions.
  Bergische Universität Wuppertal, Germany, January 2019
• Well-posedness for a general class of differential inclusions.
  University of Strathclyde, Glasgow, United Kingdom, September 2018
• Exponential Stability for Evolutionary Equations.
  Universität Konstanz, Germany, November 2017
• Lineare evolutionäre Gleichungen.
  Fernuniversität Hagen, Germany, October 2017
• Initial value problems for evolutionary equations.                                                  University of Bath, United Kingdom, September 2016 

• Über eine Klasse maximal monotoner Block-Operator-Matrizen in evolutionären Gleichungen.
  3-Städte-Seminar, TU Chemnitz, Germany, October 2015

• On Non-autonomous Evolutionary Problems.
  Heriot-Watt University Edinburgh, United Kingdom, March 2015
  University of Strathclyde Glasgow, United Kingdom, March 2015

• An alternative functional-analytic perspective on Delay-Equations (Lecture series).
  Graduate Course in Delay Differential Equations, Linnaeus University Växjö, Sweden, October 2014

• Nonlinear boundary conditions for a class of Port-Hamiltonian systems.

  Port-Hamiltonian Systems: Approximations, Theory and Practice, Leiden Lorentz-Center, The Netherlands, March 2014

• Wohlgestelltheit evolutionärer Differentialgleichungen und -inklusionen.
  TU Chemnitz, Germany, October 2013           

Presentations on Conferences

• Well-posedness for a general class of differential inclusions.
  Advances in Operator Theory with Applications to Mathematical Physics, Orange, USA, November 2018
• Strongly continuous semigroups associated with evolutionary equations.
  Semigroups of Operators: Theory and Applications, Kazimierz Dolny, Poland, October 2018
• Admissible initial values and histories for a class of evolutionary equations.
  11th AANMPDE(JS) workshop, Särkisaari, Finland, August 2018

• Discontinuous Galerkin Methods for Evolutionary Equations
  10th AANMPDE(JS) workshop, Paleochora, Greece, October 2017  

• A note on differential-algebraic equations in infinite dimensions
  IWOTA 2017, Chemnitz, Germany, August 2017
• A note on causal and amnesic operators.                                                                     GAMM Annual Meeting, Weimar, Germany, March 2017 
• Maximal regularity for a class of evolutionary problems.
  Workshop: Operator Theory and Indefinite Inner Product Spaces, Vienna, Austria, December 2016

• A class of block-operator matrices in system theory.                                                   DMV-GAMM Annual Meeting, Braunschweig, Germany, March 2016

• Nonlinear boundary conditions and a class of m-accretive block operator matrices.  The Fourth Najman Conference on Spectral Problems for Operators and Matrices, Opatija, Croatia, September 2015

• Exponential stability of a second-order integro-differential equation with delay.
  GAMM Annual Meeting, Lecce, Italy, March 2015

• A Note on Exponential Stability for Evolutionary Equations.                                      GAMM Annual Meeting, Erlangen, Germany, March 2014

• Well-posedness for a class of non-autonomous differential inclusions.
  The Third Najman Conference on Spectral Problems for Operators and Matrices, Biograd, Croatia, September 2013

• Evolutionary equations with frictional boundary conditions.                                            5th Anniversary WORKSHOP of the GAMM Activity Group Applied Operator Theory, Berlin, Germany, May 2013
  Operator Semigroups meet Complex Analysis, Harmonic Analysis and Mathematical Physics, Herrnhut, Germany, June 2013

• An alternative approach to integro-differential equations.                                         GAMM Annual Meeting, Novi Sad, Serbia, March 2013

• On a class of boundary control systems.
  Workshop on Spectral Theory and Differential Operators, Graz, Austria, August 2012                        

• Well-posedness and conservativity for linear control systems.
  German-Italian workshop on Modern Aspects of Phase Space Analysis, Freiberg, Germany, February 2012
  GAMM Annual Meeting, Darmstadt, Germany, March 2012

• Well-posedness and causality of a class of evolutionary inclusions.                           DMV Annual Meeting, Cologne, Germany, September 2011

• Well-posedness of evolutionary inclusions.

  Chinese-German workshop on PDE and Applications, Freiberg, Germany, February 2011                                        

Supervised Theses

• Nonlinear Dirichlet Forms.
  Burkhard Claus, Master Thesis, September 2017 (with Prof. Dr. Ralph Chill)

• Thom's Theorem and its Application in Bifurcation Theory.
  Hannes Weiße, Master Thesis, March 2017 (with Prof. Dr. Stefan Siegmund)
• Sobolev-Verbände über Banach-Räumen.                                                              Sebastian Mehlich, Diploma Thesis, March 2015 (with Prof. Dr. Rainer Picard)

Other Activities

• Organiser of the Section: "Applied Operator Theory" (with Prof. Dr. Rainer Picard)
  GAMM Annual Meeting, Weimar, Germany, March 2017      
• Member of Organising Committee of Conference: "ICDEA 2018"
  Dresden, Germany, April 2018.