E-theory for -Categories
arXiv:2008.12426
Abstract
-theory was originally defined concretely by Connes and Higson and further work followed this construction. We generalise the definition to -categories. -categories were formulated to give a theory of operator algebras in a categorical picture and play important role in the study of mathematical physics. In this context, they are analogous to -algebras and so have invariants defined coming from -algebra theory but they do not yet have a definition of -theory. Here we define -theory for both complex and real graded -categories and prove it has similar properties to -theory for -algebras.