The CR Ahlfors derivative and a new invariant for spherically equivalent CR maps

27.05.2021 10:00 - 11:30

Son Duong Ngoc (University of Vienna)

I will discuss a notion of the Ahlfors derivative for CR maps. This notion possesses several properties similar to those of the conformal counterpart and provides a new invariant for spherical equivalent CR maps from strictly pseudoconvex CR manifolds into a sphere. The invariant can be computed easily and distinguishes many well-known equivalent classes of CR maps between spheres. In particular, it vanishes precisely when the map is spherical equivalent to the linear embedding. This is a joint work with Bernhard Lamel.

Bernhard Lamel