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arXiv · 2312.03525

Excluded minors of interval positroids that are paving matroids

Hyungju Park
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Abstract

We prove that every paving matroid that is an excluded minor of interval positroids can be reduced to one of three fundamental families of excluded minors of interval positroids by relaxing dependent hyperplanes. Using this result, we classify all non-positroid excluded minors of interval positroids that are paving matroids. Additionally, we provide a criterion that characterizes all excluded minors of interval positroids that are paving positroids.

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Hyungju Park. 2023-12-06. Excluded minors of interval positroids that are paving matroids. https://arxiv.org/abs/2312.03525

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