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L2-cohomology of manifolds with flat ends

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Abstract.

We give a topological interpretation of the spaces of L2-harmonic forms on manifolds with flat ends. We also prove a Chern-Gauss-Bonnet formula for the L2-Euler characteristic of some of these manifolds.¶Résumé.Nous donnons une interprétation topologique des espaces de formes harmoniques L2 d'une variété riemannienne complète plate l'infini. Nous obtenons aussi une formule de Chern-Gauss-Bonnet pour la caractéristique d'Euler L2 de certaines de ces variétés. Ces résultats sont des conséquences de théorèmes généraux sur les variétés riemanniennes complètes dont l'opérateur de Gauss-Bonnet est nonparabolique l'infini.

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Submitted: January 2002. Revision: October 2002

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Carron, C. L2-cohomology of manifolds with flat ends. GAFA, Geom. funct. anal. 13, 366–395 (2003). https://doi.org/10.1007/s000390300009

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