This is a long term collaboration that applies surgery theory of stratified spaces to problems in group actions. These have had applications in global analysis, transformation groups, and algebraic geometry. Recent work has led to new potential applications for a well developed functoriality theory, and that will be the main focus of this small group.

Relevant background can be found in two books by Weinberger.

“The topological classification of stratified spaces” University of Chicago Press 1994 and
“Variations on a theme of Borel” Cambridge University Press (to appear), and available on Weinberger’s web page.