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On The Thom Isomorphism For Groupoid-Equivariant Representable K-Theory, Zachary J. Garvey
On The Thom Isomorphism For Groupoid-Equivariant Representable K-Theory, Zachary J. Garvey
Dartmouth College Ph.D Dissertations
This thesis proves a general Thom Isomorphism in groupoid-equivariant KK-theory. Through formalizing a certain pushforward functor, we contextualize the Thom isomorphism to groupoid-equivariant representable K-theory with various support conditions. Additionally, we explicitly verify that a Thom class, determined by pullback of the Bott element via a generalized groupoid homomorphism, coincides with a Thom class defined via equivariant spinor bundles and Clifford multiplication. The tools developed in this thesis are then used to generalize a particularly interesting equivalence of two Thom isomorphisms on TX, for a Riemannian G-manifold X.