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arXiv · 1210.7331

Three-orbifolds with positive scalar curvature

Hong Huang
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Abstract

We prove the following result: Let $(\mathcal{O},g_0)$ be a complete, connected 3-orbifold with uniformly positive scalar curvature, with bounded geometry, and containing no bad 2-suborbifolds. Then there is a finite collection $\mathcal{F}$ of spherical 3-orbifolds, such that $\mathcal{O}$ is diffeomorphic to a (possibly infinite) orbifold connected sum of copies of members in $\mathcal{F}$. This extends work of Perelman and Bessi$\grave{e}$res-Besson-Maillot. The proof uses Ricci flow with surgery on complete 3-orbifolds, and are along the lines of the author's previous work on 4-orbifolds with positive isotropic curvature.

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Hong Huang. 2012-10-27. Three-orbifolds with positive scalar curvature. https://arxiv.org/abs/1210.7331

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