108 citations · 197 across the 16 of their papers we have counts for
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math.KT2009★ 13 cited
A Geometric Description of Equivariant K-Homology for Proper Actions
Paul Baum, Nigel Higson, Thomas Schick
Let G be a discrete group and let X be a G-finite, proper G-CW-complex. We prove that Kasparov's equivariant K-homology groups KK^G(C_0(X),\C) are isomorphic to the geometric equiv…
math.KT2009★ 8 cited
Spaces with vanishing $l\sp 2$-homology and their fundamental groups (after Farber and Weinberger)
Nigel Higson, John Roe, Thomas Schick
The "zero in the spectrum conjecture" asserted (in its strongest form) that for any manifold M zero should be in the l2-spectrum of the Laplacian (on forms) of the universal coveri…