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Dr Frank Rosler

Dr Frank Rosler

Marie Skłodowska-Curie Fellow

School of Mathematics

I am currently a Research Associate in Cardiff University. My research is supported by the EPSRC grant QUEST: Quantitative Estimates in Spectral Theory and Their Complexity (see ).

I am generally interested in the spectral theory of non-selfadjoint operators. And the approximation of spectra. Past projects involved pseudospectra of non-normal Schrödinger Operators and more general resolvent norm estimates of partial Differential operators. For more information, see my personal website.


We will be organising the conference Small Scales and Homogenisation (SmaSH) at Cardiff University, 24-26 June 2019.

Education and Degrees

  • 2018-present: Research Associate, School of Mathematics, Cardiff University, Cardiff, UK.
  • 2014-2018: PhD Mathematics, Dept of Mathematical Sciences, Durham University, Durham, UK.
    Topic: Spectral Theory of non-selfadjoint Schrödinger Operators and Homogenisation of PDEs in perforated domains.
  • 2011-2014: MSc Physics, Heidelberg University, Heidelberg, Germany.
    Thesis, Institute for Theoretical Physics, Heidelberg, Germany.
    Topic: Surface Operators in Chern-Simons Theory
  • 2008–2011: BSc Physics, Heidelberg University, Heidelberg, Germany.

    Thesis, Institute for Theoretical Physics, Heidelberg, Germany. Topic: Distributions and Wave-Front Set

Speaking engagements

  • Oct. 2019: Seminar Talk, University of Kent, Canterbury, UK.
  • Jun. 2019: Oral Presentation, Meeting of the GAMM activity group "Applied Operator Theory"
  • Nov. 2018: Seminar Talk, Imperial College London, UK.
  • Nov. 2018: Seminar Talk, Cambridge University, UK.
  • Jun. 2018: Seminar Talk, TU Dresden, Germany.
  • Mar. 2018: Oral presentation, GAMM annual meeting, Munich, Germany.
  • Jan. 2018: Seminar Talk, Philipps University of Marburg, Germany.
  • Nov. 2017: Seminar Talk, University of Bath, UK.
  • Sep. 2017: Oral presentation, ASPECT17, Trier, Germany.
  • Aug. 2017: Poster presentation, Modern Trends in Structure Forming Systems, Heidelberg, Germany.
  • Jun. 2017: Oral presentation, Mathematical aspects of the physics with non-self-adjoint operators, Marseille, France.
  • Jun. 2016:Poster presentation, 4th Scottish Partial Differential Equations Colloquium, Dundee, UK.
  • Oct. 2015: Seminar Talk, University of Nottingham, UK.
  • Oct. 2015: Oral presentation, Young Researchers Workshop on Spectral Theory, Bern, Switzerland.
  • May, 2015: Poster presentation, Pseudo-Hermitian Hamiltonians in Quantum Physics , Palermo, Italy.

Winter term 2019/20

Summer term 2018

Winter term 2017/18

Summer term 2017

  • Reading course on the Spectral Theorem for compact, bounded and unbounded selfadjoint operators on Hilbert spaces at the University of Freiburg.

Summer term 2016

Winter term 2016/17

Publications and Preprints

Areas of expertise

External profiles