Homotopy classification of elliptic problems associated with discrete group actions on manifolds with boundary

A. Yu. Savin   ; B. Yu. Sternin

Ufa mathematical journal, Tome 8 (2016) no. 3, pp. 122-129

Résumé

Given an action of a discrete group $G$ on a smooth compact manifold $M$ with a boundary, we consider a class of operators generated by pseudodifferential operators on $M$ and shift operators associated with the group action. For elliptic operators in this class, we obtain a classification up to stable homotopies and show that the group of stable homotopy classes of such problems is isomorphic to the $K$-group of the crossed product of the algebra of continuous functions on the cotangent bundle over the interior of the manifold and the group $G$ acting on this algebra by automorphisms.

Détail

Keywords: elliptic operator, $K$-theory, crossed product, $G$-operator.
Mots-clés : homotopy classification

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