Institute for Numerical and Applied Mathematics - Research Group Inverse Problems

Christian Aarset
Institute for Numerical and Applied Mathematics
Lotzestraße 16-18
37083 Göttingen

room 302
Phone 0551 39 23407
c.aarset [at]

Hei! I am a postdoc in the workgroup Inverse Problems supervised by Prof. Dr. Thorsten Hohage. I worked two years on a project related to energy disaggregation at the University of Graz, Austria, following my doctoral research on bifurcations in periodic integrodifference equations at the University of Klagenfurt, Austria. I have picked up a fair bit of German over the years, but I still remember how to speak Norwegian!

research interests

  • inverse problems
  • energy disaggregation
  • non-convex algorithms
  • bifurcation theory


    2020    Doctoral degree Dr.~techn: Bifurcation in Periodic Integrodifference Equations
    2016 - 2020    Doctoral studies at the University of Klagenfurt, Austria
    2010 - 2016    Master studies at the University of Oslo, Norway

other activities

  • member of IPIA
  • two research stays in Poland 2018/2019 under the Young Scientist Mentoring Programme
  • review of "R. Luís: Nonautonomous periodic difference equations: With applications in populations dynamics and economics."
  • Ph.D. Vice Speaker (2018-2020), Alpen-Adria Universität Klagenfurt
  • main author of convolutional_sparse_smartmeter (Python, energy disaggregation) and IDEPack (MATLAB, numeric bifurcation analysis)


    Refereed journal papers

    The linked pdf-files do not necessarily coincide with the article's published version.

    • Tram Thi Ngoc Nguyen, Christian Aarset, Martin Holler. preprint. Learning-informed parameter identification in nonlinear time-dependent PDEs.
    • Christian Aarset, Andreas Habring, Martin Holler, Mario Mitter. preprint. Unsupervised energy disaggregation via convolutional sparse coding. Transactions on Consumer Electronics.
    • Christian Aarset, Christian Pötzsche. 2021. Bifurcations in periodic integrodifference equations in C(Ω) I: Analytical results and applications. Discrete & Continuous Dynamical Systems – B 26(1): 1-60.
      doi:10.3934/dcdsb.2020231   download   
    • Christian Aarset, Christian Pötzsche. 2020. Bifurcations in periodic integrodifference equations in C(Ω) II: Discrete torus bifurcations. Communications on Pure & Applied Analysis 19(4): 1847-1874.
      doi:10.3934/cpaa.2020081   download   

    Submitted papers