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most citedThree counterexamples to a conjecture of Colin de Verdière on multiplicity

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Three counterexamples to a conjecture of Colin de Verdière on multiplicity

Maxime Fortier Bourque, Émile Gruda-Mediavilla, Bram Petri +1

We exhibit closed hyperbolic surfaces of genus , , and such that the multiplicity of the first nonzero eigenvalue of their Laplacian is larger than the maximum conject…