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From the 1 of 16 linked papers with an AI index.

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16 papers

math.CO2026

Product structure of graphs excluding a topological minor

Jędrzej Hodor, Hoang La, Piotr Micek +1

We prove that, for all positive integers and and every graph with , there exists a positive integer such that every graph with $\mat…

math.CO2026

Erdős-Pósa property of rooted tree minors

Quentin Claus, Gwenaël Joret, Clément Rambaud +1

The paper proves that for any tree T and any vertex set S in a graph G, either G contains k vertex‑disjoint T‑minors rooted in S or there is a vertex set of size O(k) whose removal…

math.CO2026

The grid-minor theorem revisited

Vida Dujmović, Robert Hickingbotham, Jędrzej Hodor +6

We prove that for every planar graph of treedepth , there exists a positive integer such that for every -minor-free graph , there exists a graph of treewidth a…

math.CO2026

Faithful universal graphs for minor-closed classes

Paul Bastide, Louis Esperet, Carla Groenland +3

It was proved by Huynh, Mohar, Šámal, Thomassen and Wood in 2021 that any countable graph containing every countable planar graph as a subgraph has an infinite clique minor. We p…

math.CO2026

On the -inversion diameter of oriented graphs

Frédéric Havet, Clément Rambaud, Caroline Silva

In an oriented graph , the {\it inversion} of a subset of vertices consists in reversing the orientation of all arcs with both endvertices in . The {\it -…

cs.DM2026

Sample compression schemes for balls in structurally sparse graphs

Romain Bourneuf, Jędrzej Hodor, Piotr Micek +1

Sample compression schemes were defined by Littlestone and Warmuth (1986) as an abstraction of the structure underlying many learning algorithms. In a sample compression scheme, we…