03.07.2025, 16:15
– Raum 1.22
Forschungsseminar Differentialgeometrie
Heat and resolvent expansions in the noncommutative case
Matthias Lesch (Bonn)
The Chen–Teo gravitational instanton is an asymptotically flat, toric, Ricci-flat family of metrics on CP2∖S1, that provides a counter-example to the classical Euclidean Black Hole Uniqueness conjecture. In this paper we show that the Chen–Teo instanton is Hermitian and non-Kähler. It follows that all known examples of gravitational instantons are Hermitian.