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arxiv: 1109.4914 · v2 · pith:CP6S3KIVnew · submitted 2011-09-22 · 🧮 math.CO · math.AT

Special cycles in independence complexes and superfrustration in some lattices

classification 🧮 math.CO math.AT
keywords complexesindependencesomebetticorrespondscyclesexponentialfermions
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We prove that the independence complexes of some grids have exponential Betti numbers. This corresponds to the number of ground states in the hard-core model in statistical physics with fermions in the vertices of the grid.

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