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Finite presentations of the mapping class groups of once-stabilized Heegaard splittings

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arxiv 2203.14059 v2 pith:MXDXMZU7 submitted 2022-03-26 math.GT

classification math.GT
keywords heegaardclassmappingsplittingassumecloseddistancefinite
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abstract

Let $g \ge 2$ and assume that we are given a genus $g$ Heegaard splitting of a closed orientable $3$-manifold with the distance greater than $2g+2$. We prove that the mapping class group of the once-stabilization of such a Heegaard splitting is finitely presented.

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