21.05.2026, 14:00–16:30
– FU Berlin, Room 101
Forschungsseminar Differentialgeometrie
Interuniversity Seminar in Geometric Analysis (FU Berlin)
Peter Topping and Isabel Fernández
Alexander Strohmaier
I will review some known general expansions of microlocal spectral counting functions of Dirac and Laplace operators. In special cases these relate directly to heat kernel coefficients. I will then explain some differences between expansions for Laplace and Dirac type operators and show that generalized Dirac operators can be characterized amongst Dirac type operators by the vanishing of a certain coefficient appearing in the expansion of the spectral counting function. (Joint work with Liangpan Li)