Past Seminar

3 March 2022 (Thursday)

9:00 ～ 10:00 (in Vietnam time)

11:00 ～ 12:00 (in Japan time)

Speaker: Baldur Sigurðsson (VAST)

Title: Mixed tête-à-tête twists as monodromies associated with holomorphic function germs

Abstract: We define mixed tête-à-tête twists, and discuss their relation with classical theory, such as Thurston's classification of surface automorphisms and the Nielsen graph. We prove that tête-à-tête graphs encode precisely the surface automorphisms arising as the monodromy of a holomorphic function with isolated singularity on an isolated complex surface singularity. This is joint work with Pablo Portilla Cuadrado.

※ This is a joint seminar with "Seminar of the Department of Geometry and Topology, Hanoi Institute of Mathematics"