Ronen Wdowinski
Ronen Wdowinski

Postdoc at TU Graz

    About Me

    I am a postdoctoral researcher at the Institute of Discrete Mathematics at TU Graz, working with Mihyun Kang. I did my PhD in Combinatorics and Optimization at the University of Waterloo, under the supervision of Penny Haxell.

    My research interests lie in extremal, probabilistic, and topological combinatorics. Problems involve graph theory, combinatorial optimization, discrete geometry, algebraic topology, and statistical physics.

    Email address: wdowinski [at] math [dot] tugraz [dot] at.

    Here are links to my Google Scholar and arXiv.

    Papers
    1. Block-weighted random graphs: planar and beyond (arXiv Link).
      With Zéphyr Salvy, Mihyun Kang. Submitted.
    2. Sampling from the antiferromagnetic Ising model on bipartite, regular expander graphs (arXiv Link).
      With Anna Geisler, Mihyun Kang, Michail Sarantis. Submitted.
    3. Hall’s theorem for reconfigurations and higher dimensional topological connectedness (arXiv Link).
      Submitted.
    4. Counting independent sets in percolated graphs via the Ising model (Journal Link, arXiv Link).
      With Anna Geisler, Mihyun Kang, Michail Sarantis. Random Structures & Algorithms 68:e70044, 2026.
    5. Bounded degree graphs and hypergraphs with no full rainbow matchings (Journal Link, arXiv Link).
      European Journal of Combinatorics 133:104316, 2026.
    6. Constructing graphs with no independent transversals (Journal Link, arXiv Link).
      With Penny Haxell. The Electronic Journal of Combinatorics 31(2):P2–39, 2024.
    7. A precise condition for independent transversals in bipartite covers (Journal Link, arXiv Link).
      With Stijn Cambie, Penny Haxell, Ross J Kang. SIAM Journal on Discrete Mathematics 38(2):1451–1461, 2024.
    8. Degree criteria and stability for independent transversals (Journal Link, arXiv Link).
      With Penny Haxell. Journal of Graph Theory 106(2):352–371, 2024.
    9. On an f-coloring generalization of linear arboricity of multigraphs (Journal Link, arXiv Link).
      Discrete Mathematics 347(2):113777, 2024.
    10. Orientation‐based edge‐colorings and linear arboricity of multigraphs (Journal Link, arXiv Link).
      Journal of Graph Theory 102(4):633–647, 2023.
    11. On zigzag maps and the path category of an inverse semigroup (Journal Link, arXiv Link).
      (with Allan Donsig, Jennifer Gensler, Hannah King, David Milan) Semigroup Forum 100(3):790–805, 2020.
    12. Partitioning the power set of [n] into Ck-free parts (Journal Link, arXiv Link).
      With Eben Blaisdell, András Gyárfás, Robert A Krueger. The Electronic Journal of Combinatorics 26(3):P3–38, 2019.
    Teaching
    During January to April 2024, I lectured at the University of Waterloo for the course, MATH 136: Linear Algebra 1 for Honours.