Curriculum Vitae

Research Interests

• Cardinality-constrained optimization problems
• Channel preorders and Shannon-garblings
• Critical point theory
• Nonsmooth optimization

Publications

• Lämmel, Sebastian ; Shikhman, Vladimir. Extended convergence analysis of the Scholtes-type regularization for cardinality-constrained optimization problems. In: Mathematical Programming, online first. doi.org/10.1007/s10107-024-02082-3
• Lämmel, Sebastian ; Shikhman, Vladimir. Cardinality-constrained optimization problems in general position and beyond. In: Pure and Applied Functional Analysis, Vol. 8, no. 4., p. 1107-1133 (2023). http://yokohamapublishers.jp/online2/oppafa/vol8/p1107.html
• Lämmel, Sebastian ; Shikhman, Vladimir. Global aspects of the continuous reformulation for cardinality-constrained optimization problems. In: Optimization, online first. doi.org/10.1080/02331934.2023.2249014
• Lämmel, Sebastian ; Shikhman, Vladimir. Critical point theory for sparse recovery. In: Optimization (2023), Vol. 72, p. 521-549 (2023). doi.org/10.1080/02331934.2021.1981317
• Lämmel, Sebastian ; Shikhman, Vladimir. Optimality conditions for mathematical programs with orthogonality type constraints. In: Set-Valued and Variational Analysis, (2023), Vol. 31, 9. doi.org/10.1007/s11228-023-00673-4
• Lämmel, Sebastian ; Shikhman, Vladimir. On nondegenerate M-stationary points for sparsity constrained nonlinear optimization. In: Journal of Global Optimization, Vol. 82, p. 219-242 (2022). doi.org/10.1007/s10898-021-01070-7

Preprints

• Lämmel, Sebastian ; Shikhman, Vladimir. Shannon's comparison of channels characterized by optimal decision making. 19 pages (2019). arXiv:1906.07041

Conferences / Workshops / Schools

• WSOPT, Burg (Spreewald), Germany, 2024
• SIGOPT, Cottbus, Germany, 2023
• 12th paraoptXII, Augsburg, Germany, 2022
• HUGO 2022 - XV. Workshop on Global Optimization, Szeged, Hungary, 2022
• UNIVERS Winterschool, Chemnitz, Germany, 2021
• DMV-ÖMG Jahrestagung, Passau, Germany, 2021
• EUROPT, Toulouse, France, 2021
• WSOPT, Cottbus, Germany, 2021
• DMV Jahrestagung, Chemnitz, Germany, 2020
• SIGOPT, Dortmund, Germany, 2020
• ICCOPT, Berlin, Germany, 2019

Teaching 

• SoSe 2024
  • Exercise: Mathematical Foundations of Big Data Analytics [Lecturer: Prof. Dr. Vladimir Shikhman]
  • Exercise: Mathematik im Investmentbanking [Lecturer: Prof. Dr. Vladimir Shikhman]
• WiSe 2023/24
  • Exercise: Mathematische Modelle in den Wirtschaftswissenschaften [Lecturer: Prof. Dr. Vladimir Shikhman]
  • Exercise: Game Theory [Lecturer: Prof. Dr. Vladimir Shikhman]
• Previous terms:
  • Exercise: Grundlagen der Optimierung [Lecturer: Dr. Sara Grundel]
  • Exercise: Mathematical Foundations of Finance [Lecturer: Prof. Dr. Thomas Kalmes] 
  • Exercise: Mathematik I für Wirtschaftswissenschaftler und -informatiker [Lecturer: Prof. Dr. Vladimir Shikhman]
  • Exercise: Mathematik II für Wirtschaftswissenschaftler und -informatiker [Lecturer: Prof. Dr. Vladimir Shikhman, Prof. Dr. Thomas Kalmes]
  • Exercise: Mathematik im Investmentbanking [Lecturer: Prof. Dr. Vladimir Shikhman, Dr. Dana Uhlig]