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math.KT2010
Periodicity in the stable representation theory of crystallographic groups
Daniel A. Ramras
Deformation K-theory associates to each discrete group G a spectrum built from spaces of finite dimensional unitary representations of G. In all known examples, this spectrum is 2-…
math.DG2010
Invariant tubular neighborhoods in infinite-dimensional Riemannian geometry, with applications to Yang-Mills theory
Daniel A. Ramras
We present a new construction of tubular neighborhoods in (possibly infinite dimensional) Riemannian manifolds M, which allows us to show that if G is an arbitrary group acting iso…