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arXiv · 1812.11000

Matching complexes of small grids

Takahiro Matsushita
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Abstract

The matching complex $M(G)$ of a simple graph $G$ is the simplicial complex consisting of the matchings on $G$. The matching complex $M(G)$ is isomorphic to the independence complex of the line graph $L(G)$. Braun and Hough introduced a family of graphs $Δ^m_n$, which is a generalization of the line graph of the $(n \times 2)$-grid graph. In this paper, we show that the independence complex of $Δ^m_n$ is a wedge of spheres. This gives an answer to a problem suggested by Braun and Hough.

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Takahiro Matsushita. 2019-06-28. Matching complexes of small grids. https://arxiv.org/abs/1812.11000

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