Strong Jordan Separation and Applications to Rigidity |
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Authors: | Lafont Jean-Francois |
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Institution: | Department of Mathematics, The Ohio State University 100 Math Tower, 231 West 18th Avenue, Columbus, OH 43210-1174, USA jlafont{at}math.ohio-state.edu |
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Abstract: | We prove that simple, thick hyperbolic P-manifolds of dimensionat least three exhibit Mostow rigidity. We also prove a quasi-isometryrigidity result for the fundamental groups of simple, thickhyperbolic P-manifolds of dimension at least three. The keytool in the proof of these rigidity results is a strong formof the Jordan separation theorem, for maps from Sn Sn+1 whichare not necessarily injective. |
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