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Photo 10.05.22, 13 11 22.jpg

Sebastian Wiederrecht

I'm a Post Doc working on graph theory in the Discrete Mathematics Group at IBS in Daejeon.

My main field of interest is (algorithmic) structural graph theory.

Here you can find my CV.

(last updated November 2023)

We prove that directed cycles of even length have the quarter-integral Erdos-Posa property.

Excluding a graph (or a family of graphs) under a fixed containment relation can yield graph classes with very particular properties. Such properties can often be exploited for the design of efficient algorithms on the resulting graph classes. In this talk we survey several such structural parametrizations for the case of the Maximum Independent Set Problem, present new developments and open problems.

We provide a full delineation of the half-integrality of the Erdos-Posa property for minors for graphs that are shallow-vortex-minors and Kuratowski connected.

Universal Obstructions in Graph Minors

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