Jannis Halbey

My main interest lies in first-order methods for convex optimization. Lately I have worked on solving problems in semi-definite programming using conditional gradient methods.

📬 Contact

office
Room 3106 at ZIB
e-mail
languages
English and German

🎓 Curriculum vitae

since 2022
Researcher at TUB
Sep 2022
M.Sc. in Mathematics at Technical University of Darmstadt
Mar 2020
B.Sc. in Mathematics at Technical University of Darmstadt

📝 Publications and preprints

Preprints

  1. Liu, Y.-C., Halbey, J., Pokutta, S., and Designolle, S. (2025). A Unified Toolbox for Multipartite Entanglement Certification. DOI: 10.48550/arXiv.2507.17435 [arXiv]
    [BibTeX]
    @misc{2025_LiuHalbeyPokuttaDesignolle_Unifiedtoolboxmultipartite_2507-17435,
      month = jul,
      doi = {10.48550/arXiv.2507.17435},
      archiveprefix = {arXiv},
      eprint = {2507.17435},
      arxiv = {arXiv:2507.17435},
      primaryclass = {quant-ph},
      year = {2025},
      author = {Liu, Ye-Chao and Halbey, Jannis and Pokutta, Sebastian and Designolle, Sébastien},
      title = {A Unified Toolbox for Multipartite Entanglement Certification},
      date = {2025-07-23}
    }

Conference proceedings

  1. Halbey, J., Rakotomandimby, S., Besançon, M., Designolle, S., and Pokutta, S. (2025, June 3). Efficient Quadratic Corrections for Frank-Wolfe Algorithms. Proceedings of the Conference on Neural Information Processing Systems. DOI: 10.48550/arXiv.2506.02635 [arXiv]
    [BibTeX]
    @inproceedings{2025_HalbeyRakotomandimbyBesanconDesignollePokutta_Quadraticcorrections_2506-02635,
      year = {2025},
      booktitle = {Proceedings of the Conference on Neural Information Processing Systems},
      month = sep,
      doi = {10.48550/arXiv.2506.02635},
      archiveprefix = {arXiv},
      eprint = {2506.02635},
      arxiv = {arXiv:2506.02635},
      primaryclass = {math.OC},
      author = {Halbey, Jannis and Rakotomandimby, Seta and Besançon, Mathieu and Designolle, Sébastien and Pokutta, Sebastian},
      title = {Efficient Quadratic Corrections for Frank-Wolfe Algorithms},
      date = {2025-06-03}
    }

Full articles

  1. Besançon, M., Designolle, S., Halbey, J., Hendrych, D., Kuzinowicz, D., Pokutta, S., Troppens, H., Viladrich, D., and Wirth, E. (2025). Improved Algorithms and Novel Applications of the FrankWolfe.jl Library. ACM Transactions on Mathematical Software. DOI: 10.48550/arXiv.2501.14613 [arXiv]
    [BibTeX]
    @article{2025_BesanconEtAl_Frankwolfelibrary,
      year = {2025},
      journal = {ACM Transactions on Mathematical Software},
      month = aug,
      doi = {10.48550/arXiv.2501.14613},
      archiveprefix = {arXiv},
      eprint = {2501.14613},
      arxiv = {arXiv:2501.14613},
      primaryclass = {math.OC},
      author = {Besançon, Mathieu and Designolle, Sébastien and Halbey, Jannis and Hendrych, Deborah and Kuzinowicz, Dominik and Pokutta, Sebastian and Troppens, Hannah and Viladrich, Daniel and Wirth, Elias},
      title = {Improved Algorithms and Novel Applications of the FrankWolfe.jl Library},
      date = {2025-01-24}
    }

💬 Talks and posters

Conference and workshop talks

Jul 2025
Efficient Quadratic Corrections for Frank-Wolfe Algorithms
22nd Conference on Advances in Continuous Optimization (EUROPT), Southampton

Research seminar talks

Apr 2025
Frank-Wolfe for Strongly Convex Sets
IOL Research Seminar (IOL), Berlin

📅 Event Attendance

👨‍🏫 Teaching

winter 2022
Assistant for analysis 2 for engineering at TUB
summer 2023
Assistant for analysis 2 for engineering at TUB
summer 2023
Assistant for discrete optimisation and machine learning seminar at TUB
winter 2023
Assistant for analysis 1 and linear algebra for engineering at TUB
winter 2023
Assistant for discrete optimisation and machine learning seminar at TUB
summer 2024
Assistant for analysis 2 for engineering at TUB
summer 2024
Assistant for discrete optimisation and machine learning seminar at TUB
winter 2024
Assistant for analysis 1 and linear algebra for engineering at TUB
winter 2024
Assistant for discrete optimisation and machine learning seminar at TUB
summer 2025
Assistant for discrete optimisation and machine learning seminar at TUB
summer 2025
Assistant for analysis 2 for engineering at TUB