2011
DOI: 10.2748/tmj/1303219936
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A topological splitting theorem for weighted Alexandrov spaces

Abstract: Under an infinitesimal version of the Bishop-Gromov relative volume comparison condition for a measure on an Alexandrov space, we prove a topological splitting theorem of Cheeger-Gromoll type. As a corollary, we prove an isometric splitting theorem for Riemannian manifolds with singularities of nonnegative (Bakry-Emery) Ricci curvature.2000 Mathematics Subject Classification. Primary 53C20; Secondary 53C21, 53C23.

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Cited by 19 publications
(22 citation statements)
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“…The proof is similar to [KS,Lemma 5.6] (see also [EH], [FLZ,Lemma 2.1]) thanks to the Laplacian comparison theorem (Theorem 2.8).…”
Section: Analysis Of Busemann Functionsmentioning
confidence: 72%
“…The proof is similar to [KS,Lemma 5.6] (see also [EH], [FLZ,Lemma 2.1]) thanks to the Laplacian comparison theorem (Theorem 2.8).…”
Section: Analysis Of Busemann Functionsmentioning
confidence: 72%
“…Kuwae and Shioya [KS3] consider (weighted) Alexandrov spaces of curvature ≥ −1 with nonnegative Ricci curvature in terms of the measure contraction property (see Subsection 8.3). They show that, if such an Alexandrov space contains an isometric copy of the real line, then it splits off R as topological measure spaces (compare this with Theorem 6.6).…”
Section: Open Questionsmentioning
confidence: 99%
“…on Ω. Now we can define For which we have the following maximum principe of Kuwae-Shioya [26] Theorem 4.2. Let f ∈ W 1,2 0,loc (Ω; µ) be a continuous µ-subharmonic function and suppose f attains its maximum on Ω.…”
Section: Harmonic Functionsmentioning
confidence: 99%