On the middle dimensional homology classes of equilateral polygon spaces

Yasuhiko Kamiyama

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arXiv · 1507.03161

On the middle dimensional homology classes of equilateral polygon spaces

Yasuhiko Kamiyama

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Abstract

Let $M_n$ be the configuration space of equilateral polygonal linkages with $n$ vertices in the Euclidean plane ${\mathbb R}^2$. We consider the case that $n$ is odd and set $n=2m+1$. In spite of the long history of research, the homology classes in $H_{m-1}(M_n;{\mathbb Z})$ are mysterious and not well-understood. Let $\tau\colon M_n \to M_n$ be the involution induced by complex conjugation. In this paper, we determine the representation matrix of the homomorphism $\tau_\ast\colon H_{m-1}(M_n;{\mathbb Z}) \to H_{m-1}(M_n;{\mathbb Z})$ with respect to a basis of $H_{m-1}(M_n;{\mathbb Z})$.

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Yasuhiko Kamiyama. 2015-07-11. On the middle dimensional homology classes of equilateral polygon spaces. https://arxiv.org/abs/1507.03161

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