Abstract:

Non-commutative topology uses the tools of C*-algebras and algebraic topology to study phenomena from classical topology, geometry, functional analysis, and physics. In this talk we show how the same C*-algebra arises from quantum mechanics, rotations of the circle, and a flow on a torus. We then demonstrate how it is possible to retrieve information from the model using K-theory for C*-algebras. This is the opposite of a survey talk: the focus will be exclusively upon one example. No knowledge of C*-algebras or K-theory will be assumed. Graduate students are very welcome to attend.