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Geometrization of 3-dimensional orbifolds

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arxiv math/0010184 v3 pith:FDCXOD4W submitted 2000-10-18 math.GT

classification math.GT
keywords actionorbifoldannouncedarticleatoroidalcompactconjugateconnected
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abstract

The purpose of this article is to give a proof of the Orbifold Theorem announced by Thurston in late 1981: If $O$ is a compact, connected, orientable, irreducible and topologically atoroidal 3-orbifold with non-empty ramification locus, then $O$ is geometric. As a corollary, any smooth orientation preserving non-free finite group action on $S^3$ is conjugate to an orthogonal action.

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Cited by 1 Pith paper

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  1. Expansion joints in hyperbolic manifolds

    math.GT 2025-11 conditional novelty 7.0 of 10

    Cone-deforming an ideal arc through 'expansion joints' interpolates between stacked Borromean ring complements and lantern manifolds, and yields cone deformations of highly twisted 2-bridge unknotting tunnels.

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