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math.CO2026
An Erdős-Pósa theorem for cycles and faces of distinct lengths
J. Pascal Gollin, Maximilian Gorsky, Meike Hatzel +6
We show that for every , every graph contains vertex-disjoint cycles of different lengths, or there exists a set with $|X| \in \mathcal…
math.CO2026
The structure of group-labeled graphs forbidding an immersion
Rose McCarty, Caleb McFarland, Paul Wollan
A -labeled graph is an oriented graph with edges invertibly labeled by a group . We prove a structure theorem for -labeled graphs which forbid a fixed -labeled graph as…