##

**Invited Talks**

* Mathematische Homogenisierungstheorie und deren Anwendung *

TU Chemnitz, Germany, December 2019

* Evolutionary Equations: Variety, Well-posedness and Numerics *

Mathematisches Kolloquium, TU Clausthal, Germany, November 2019

* Two-scale convergence for evolutionary equations *

Institut für Mathematik, TU Hamburg-Harburg, Germany, November 2019

* Homogenisation theory for curl-div systems *

Mathematisches Seminar, CAU Kiel, Germany, November 2019

* Highly oscillatory mixed type problems *

Functional Analysis Seminar, University of Oxford, England, UK, October 2019

* Operatortheoretische Methoden in der Homgenisierungstheorie *

Katholische Universität Eichstätt--Ingolstadt, Germany, July 2019

* Operator-theoretic methods in Homogenisation Theory *

TU Chemnitz, Germany, June 2019

* Homogenisation Theory in Physics and Engineering *

TU Bergakademie Freiberg, Germany, April 2019

* Nonlocal H-convergence *

Mini-Workshop: Mathematical and Numerical Analysis of
Maxwell's Equations, Oberwolfach, Germany, December 2018

* Boundary systems and applications to infinite networks without strictly positive lower bound for the edge lengths *

Oberseminar Analysis, TU Dresden, Germany, December 2018

* An operator-theoretic description of H-convergence *

PAN Seminar, University of Kent, Canterbury, England, UK, December 2018

* Nonlocal H-convergence *

Recent advances in homogenisation theory, University of Durham, England, UK, June 2018

* On a theory for nonlocal homogenisation problems *

Analysis Seminar, Baylor University, Waco, Texas, USA, May 2018

* Nonlocal H-convergence *

Oberseminar Analysis, TU Dresden, Germany, April 2018

* Fibre Homogenisation for n-dimensional systems of partial differential equations *

Analysis Seminar, Heriot-Watt University Edinburgh, Scotland, February 2018

* Homogenisation and continuous dependence of solutions of pdes on the coefficients *

Applied Mathematics Seminar, University of Durham, England, October 2017

* A Functional Analytic Perspective to the div-curl Lemma*

Seminar Scientific Computing, TU Dresden, Germany, May 2017

* On partial differential equations involving time and their coefficients*

Colloquium, University of Auckland, New Zealand, Ferburary 2017

* On the coefficients in evolutionary equations*

Colloquium, Strathclyde University, Glasgow, Scotland, September 2016

* On the continuous dependence of evolutionary equations on the coefficients *

Seminar Analysis, Universität Konstanz, Germany, June 2016

* Evolutionäre Gleichungen und die stetige Abhängigkeit von den Koeffizienten *

TU Braunschweig, Germany, June 2016

* Homogenization and fractional elasticity *

SIAM Mathematical Aspects of Material Sciences MS16, Minisompysium "Modern Aspects of Homogenization", Philadelphia, May 2016

* The Callias Index Formula Revisited *

Oberseminar Analysis, Universität Duisburg-Essen, Germany, February 2016

* An invariance principle for the Callias index formula *

Oberseminar Analysis, TU Dresden, Germany, December 2015

* On non-autonomous equations. *

Colloquium, University of Missouri, Columbia, MO, USA, April 2015

* An operator-theoretic perspective to homogenization. *

University of Bath, England, United Kingdom, March 2015

* On the Well-posedness of Non-Autonomous Integro-Differential-Algebraic Evolutionary Problems. *

Centre for Advanced Study, Oslo, Norway, January 2015

* The Callias Index Theorem Revisited *

Universität Jena, January 2015

* Homogenization meets Operator Theory *

TU Hamburg-Harburg, November 2014

* Homogenization of a class of autonomous linear partial differential equations. Part II *

DE-Seminar, University of Missouri, Columbia, MO, USA, April 2014

* Homogenization of a class of autonomous linear partial differential equations. Part I *

DE-Seminar, University of Missouri, Columbia, MO, USA, April 2014

* Über nicht-autonome, degenerierte Gleichungen *

3-Städte-Seminar, Universität Leipzig, January 2014

* Über die stetige Abhängigkeit von Lösungen von Differentialgleichungen von den Koeffizienten. *

TU Chemnitz, Germany, October 2013

* On Non-Autonomous Evolutionary Problems. *

TU Darmstadt, May 2013

* On the structure of electrodynamical multiphysics problems *

Modeling, Analysis and Simulation of Optical Modes in Photonic Devices, MASOMO 2013, WIAS, Berlin, April 2013

* Operator theoretic aspects in homogenization of evolutionary equations *

Laboratoire Jacques-Louis Lions, UPMC, Paris VI, January 2013

* Homogenization in Fractional Thermoelasticity *

Walkshop Mathematische Physik und Partielle Differentialgleichungen, Hamburg, October 2012

* An operator-theoretic perspective to homogenization *

Strathclyde University Glasgow, Scotland, September 2012

* A Hilbert Space Approach to Homogenization *

Max Planck Institut für Mathematik in den Naturwissenschaften, Leipzig, Germany, May 2011

##

** Presentations on Conferences**

* Quantitative aspects in homogenisation problems in IR*^{d }

ISAAC 12, Aveiro, Portugal, July 2019

* The Dirichlet-to-Neumann operator on rough domains*

IWOTA, Lisbon, Portugal, July 2019

* Maximal Regularity of Evolutionary Equations*

AANMPDE 12, Strobl, Austria, July 2019

* Homogenisation of Maxwell's equations revisited*

AANMPDE 11, Jyvaskyla, Finland, August 2018

* Numerics and perturbation analysis for some mixed type problems*

BAIL Glasgow, Scotland, UK, June 2018

* On operator-norm convergence in time-dependent homogenisation problems*

GAMM Munich, Germany, March 2018

* A Functional Analytic Perspective to the
div-curl Lemma *

AANMPDE 10, Paleochora, Crete, Greece, October 2017

* Fibre Homogenisation *

IWOTA, TU Chemnitz, Chemnitz, August 2017

* Stochastic Evolutionary Equations *

Workshop of the GAMM Activity Group Applied Operator Theory, TU Hamburg-Harburg, Hamburg, May 2017

* On the well-posedness of evolutionary problems with non-local and non-autonomous coefficients *

Workshop Applied Analysis of Operators, PDE, and Functionals, Merida, Mexico, April 2017

* Resolvent estimates in the homogenization of one-dimensional viscoelasticity *

GAMM Weimar, Germany, March 2017

* Stabilization via Homogenization *

OTIND Vienna, Austria, December 2016

* On the coefficients in evolutionary equations*

Analysis and Numerics of Acoustic and Electromagnetic Problems, RICAM Linz, Austria, October 2016

*On the Eddy Current Approximation for Non-Autonomous Maxwell's Equations
*

AANMPDE(JS)-9-16, Strobl, Austria, July 2016

*G-convergence and the weak operator topology
*

DMV-GAMM, TU Braunschweig, Germany, March 2016

*On the resolvent regularization by Witten
*

4th Najman Conference on Spectral Problems for Operators and Matrices, Opatija, Croatia, September 2015

*On the continuous dependence of the coefficients in Maxwell's equations
*

AANMPDE, Jyvaskyla, Finland, August 2015

*On the trace class property of the resolvent regularization of a
Dirac-type operator on IR*^{3
}

GAMM, Lecce, Italy, March 2015

*How does the solution of the time-dependent Schrödinger equation depend on the potential? *

International Workshop on Operator Theory and Applications, Amsterdam, The Netherlands, July 2014

*On causality in reflexive Banach spaces *

GAMM, Universtät Erlangen-Nuremberg, Germany, March 2014

*On Non-Autonomous Evolutionary Problems. *

Operator Semigroups meet Complex Analysis, Harmonic Analysis and Mathematical Physics, Herrnhut, Germany, June 2013

*G-convergence of linear differential equations. *

Encounters Between Discrete and Continuous Mathematics, Budapest, Hungary, May 2013

*Homogenization in fractional elasticity *

GAMM, Novi Sad, March 2013

*A Hilbert Space Perspective on Ordinary Differential Equations with Memory Term.*

Spectral Theory and Differential Operators, Graz, August 2012

*Well-posedness and conservativity for linear control systems.*

GAMM, Darmstadt, March 2012 (PAMM_part 1 ^{},PAMM_part 2 ^{})

*Well-posedness and conservativity for linear control systems.*

German-Italian Workshop on Modern Aspects of Phase Space Analysis, Freiberg, February 2012

*A Note on Homogenization of Ordinary Differential Equations with Delay Term.*

GAMM, Graz, April 2011 ( PAMM ^{})

*A Hilbert Space Approach to Homogenization.*

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

*Calculating adjoints of operators on infinite graphs. *

International Workshop on Operator Theory and Applications, Berlin, June 2010 (IWOTA-Proc. ^{})

##

**Theses, Refereee**

with Prof. R. Chill (Second Referee):

M. Schmidt,
*Delay-Differentialgleichungen*, (Master's Thesis) 2015

with Prof. R. Chill (First Referee):

C. Hammann,
*Die Mazâ€™ja Ungleichung*, (Bachelor's Thesis) 2015

with Prof. R. Chill (First Referee):

C. Lepski,
*Tensornormen und Operatorräume*, (Diploma Thesis) 2014

with Prof. R. Chill (First Referee):

B. Colson,
*Approximation of solutions for the nonlinear evolution equation*, (Diploma Thesis) 2014

with Prof. J. Voigt (First Referee):

A. Fiedler,
*Zur Spektraltheorie von Jacobi-Matrizen*, (Diploma Thesis) 2014

##

**Editorial Work**

Member of the Editorial Board of ** Mathematical Methods in the Applied Sciences **
(Link to Journal ^{})

Member of the Editorial Board of ** Mathematica Slovaca **
(Link to Journal ^{})

##

**Research Visits**

05/2018
** Baylor University**, Waco, TX, USA (F Gesztesy)

01/2017 - 03/2017
** University of Auckland**, New Zealand (AFM ter Elst, FM Schneider)

10/2016
** RICAM**, Linz, Austria (D Pauly)

04/2015 **
University of Missouri**, Columbia, MO, USA (F Gesztesy)

01/2015 **Centre for Advanced Study**, Oslo, Norway (A Suess)

11/2014**
Universität Hamburg-Harburg**, Hamburg, Germany (C Seifert)

04/2014 ** University of Missouri**, Columbia, MO, USA (F Gesztesy)