Monopole Floer homology, eigenform multiplicities and the Seifert-Weber dodecahedral space

Francesco Lin; Michael Lipnowski

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arXiv · 2003.11165

Monopole Floer homology, eigenform multiplicities and the Seifert-Weber dodecahedral space

Francesco Lin·Michael Lipnowski

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Abstract

We show that the Seifert-Weber dodecahedral space $\mathsf{SW}$ is an $L$-space. The proof builds on our work relating Floer homology and spectral geometry of hyperbolic three-manifolds. A direct application of our previous techniques runs into difficulties arising from the computational complexity of the problem. We overcome this by exploiting the large symmetry group and the arithmetic and tetrahedral group structure of $\mathsf{SW}$ to prove that small eigenvalues on coexact $1$-forms must have large multiplicity.

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Francesco Lin, Michael Lipnowski. 2020-03-25. Monopole Floer homology, eigenform multiplicities and the Seifert-Weber dodecahedral space. https://arxiv.org/abs/2003.11165

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