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Type: Artigo de periódico
Title: Wiedersehen metrics and exotic involutions of Euclidean spheres
Author: Abresch, U
Duran, C
Puttmann, T
Rigas, A
Abstract: We provide explicit, simple, geometric formulas for free involutions p of Euclidean spheres that are not conjugate to the antipodal involution. Therefore the quotient S-n/p is a manifold that is homotopically equivalent but not diffeomorphic to RPn. We use these formulas for constructing explicit non-trivial elements in pi(1) Diff (S-5) and pi(1) Diff (S-13) and to provide explicit formulas for non-cancellation phenomena in group actions.
Country: Alemanha
Editor: Walter De Gruyter & Co
Rights: embargo
Identifier DOI: 10.1515/CRELLE.2007.025
Date Issue: 2007
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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