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Author

Jędrzej Hodor

4 papers indexed here

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Preprint Aug 2026

Row pathwidth of complete binary trees

We show that if a complete binary tree of height $h$ is isomorphic to a subgraph of the strong product of a graph $H$ and a path, then $\mathrm{pw}(H)$ is $\Omega(h)$. This solves a problem posed by Bose, Dujmovi\'c, Javarsineh, Morin, and Wood (2022). The proof was found by OpenAI's GPT-5.6 Sol Pro.

Jędrzej Hodor, P. Micek · 0 citations
Preprint Aug 2026

Product structure of graphs excluding a topological minor

We prove that, for all positive integers $h$ and $t$ and every graph $X$ with $\mathrm{td}(X) \leq h$, there exists a positive integer $c(X,t)$ such that every graph $G$ with $\mathrm{tw}(G)<t$ that excludes $X$ as a topological minor is isomorphic to a subgraph of $H \boxtimes K_{c(X,t)}$ for some graph $H$ with $\mat...

Jędrzej Hodor, La Hoang, P. Micek et al. · 0 citations
Jul 2026

Optimal tree-decompositions with bags of bounded pathwidth

We show that every planar graph has a tree-decomposition with optimal width such that the subgraph induced by each bag has pathwidth at most 3. This bound is best possible, and for tree-decompositions that satisfy a certain minimality condition, we in fact give a precise description of the possible structures in each b...

Kevin Hendrey, Robert Hickingbotham, Jędrzej Hodor et al. · 0 citations
Preprint Aug 2026

Superlinear separation between linear and centered colorings

A vertex-coloring of a graph is centered if every connected subgraph has a vertex with a unique color. A vertex-coloring of a graph is linear if every path in the graph has a vertex with a unique color. Let $\chi_{\mathrm{cen}}(G)$ and $\chi_{\mathrm{lin}}(G)$ be the minimum number of colors in a centered (resp. linear...

Jędrzej Hodor, P. Micek · 0 citations

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