We are glad to announce the upcoming talk given by Eriko Shinkawa in the Oberseminar "Geometrie und Visualisierung" (Geometry and Visualization).

Title
Local Asymmetry and Global Twisting in Surface Geometry

Date, Time and Place
24.11.2025, 0:15 pm, Arnimallee 6 - Room 108/109

Abstract

A map f from a surface into the two-sphere can be viewed as a geometric structure that models twisted structures. In this talk, we focus on a pseudoscalar quantity—local chirality (local asymmetry)—derived from the local variation of the map f, and examine how such local asymmetry contributes to the emergence of global twisting. We then explore a discrete differential–geometric treatment of this setting and outline a framework for describing chirality in a discrete context.