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20212026
most citedProblems, proofs, and disproofs on the inversion number

3 citations · 8 across the 25 of their papers we have counts for

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7 papers · 1 filter

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

Fiorini, Joret, and Wood (2013) showed that tree minors satisfy the so-called Erdős-Pósa property with a linear bound: For every tree there exists a constant such th…

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…

math.CO2026

Blow-up structure of graphs excluding a tree or an apex-tree as a minor

Quentin Claus, Gwenaël Joret, Clément Rambaud

We prove blow-up structure theorems for graphs excluding a tree or an apex-tree as a minor. First, we show that for every -vertex tree with and radius , and eve…

math.CO2026

Centered colorings and weak coloring numbers in minor-closed graph classes

Jędrzej Hodor, Hoang La, Piotr Micek +1

Let be a proper minor-closed class of graphs. Given the minors excluded in , we determine the maximum -centered chromatic number and the maximum th…

math.CO2026

Cops and robber in graphs with bounded vertex cover number

Prosenjit Bose, Louis Esperet, Jędrzej Hodor +3

Meyniel's conjecture states that -vertex connected graphs have cop number . The current best known upper bound is , proved independentl…