Olga Aryasova (Inst. of Geophysics, Nat. Acad. of Sciences of Ukraine / Friedrich–Schiller–Univ. Jena)
Indrava Roy (IMSc Chennai, zZ. Potsdam)
We describe how equivariant coarse geometry is employed in the study of rigidity properties of secondary invariants of Dirac operators for a Galois covering. We shall also discuss generalizations of these techniques to etale groupoids which produce new higher secondary invariants.