Poincaré duality and Serre fibrations
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N.B. Brodskij; E.V. Shchepin
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Article
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1997
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Elsevier Science
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English
⚖ 484 KB
We prove that a proper map f : n/r-+ N" between manifolds is a Serre fibration if it has the homotopy lifting property for (m ~ n)-dimensional polyhedra, where n is close to m/2. o 1997 Elsevier Science B.V.