A Thom Isomorphism for Infinite Rank Euclidean Bundles
Abstract
An equivariant Thom isomorphism theorem in operator K-theory is formulated and proven for infinite rank Euclidean vector bundles over finite dimensional Riemannian manifolds. The main ingredient in the argument is the construction of a non-commutative C*-algebra associated to a bundle E -> M, equipped with a compatible connection, which plays the role of the algebra of functions on the infinite dimensional total space E. If the base M is a point, we obtain the Bott periodicity isomorphism theorem of Higson-Kasparov-Trout for infinite dimensional Euclidean spaces. The construction applied to an even (finite rank) spin-c-bundle over an even-dimensional proper spin-c-manifold reduces to the classical Thom isomorphism in topological K-theory. The techniques involve non-commutative geometric functional analysis.
Cite
@article{arxiv.math/0306048,
title = {A Thom Isomorphism for Infinite Rank Euclidean Bundles},
author = {Jody Trout},
journal= {arXiv preprint arXiv:math/0306048},
year = {2007}
}
Comments
Accepted for publication in Homology, Homotopy and Applications