Abstract:I will describe a complete set of numerical invariants for deciding whether a real vector bundle is stably trivial. These invariants are integers and rational angles which will be a priori given in contrast to the usual theory of secondary characteristic classes. The definition of these invariants features a duality between the reals and quaternions, moreover a quaternionic version of...
Speaker Intro・ PhD in 2008, Humboldt Universität Berlin, Germany ・ Habilitation in 2014, Universität Tübingen, Germany ・ Researcher at Universities of Heidelberg, Hamburg, Hannover, 2014-2022 ・ Professor at Beijing Institute of Mathematical Sciences and Applications from September 2022 on ・ Research interests: minimal surfaces, harmonic maps, Riemann surfaces, Higgs bundles, moduli spaces,...