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An estimate for the volume entropy of nonpositively curved graph manifolds

Sergei Buyalo
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Abstract

Let M be a closed 3-dimensional graph manifold. We prove that h(g)>1 for each geometrization g of M, where h(g) is the topological entropy of geodesic flow of g.

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Sergei Buyalo. 2002-02-17. An estimate for the volume entropy of nonpositively curved graph manifolds. https://arxiv.org/abs/math/0202160

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