Academics

From Quadratic Forms to Motivic Cohomologies | BIMSA Member Seminar

Time:2024-01-29 Mon 17:00-17:45

Venue:A6-1 ZOOM: 388 528 9728(PW: BIMSA)

Organizer:Yuval Peres, Artan Sheshmani, Hossein Yavartanoo

Speaker:Nanjun Yang BIMSA

Speaker Intro

Nanjun Yang got his doctor and master degree in University of Grenoble-Alpes, advised by Jean Fasel, and bachelor degree in Beihang University. Currently he is a assistant researcher in BIMSA. His research interests are motivic cohomology and Chow-Witt ring. He proposed the theory of split Milnor-Witt motives, which applies to the computation of the Chow-Witt ring of fiber bundles. The corresponding results have been published independently on journals such as Camb. J. Math and Doc. Math.


DATEJanuary 29, 2024
SHARE
Related News
    • 0

      BIMSA Member Seminar - Bart Vlaar

      Speaker IntroDr. Bart Vlaar has joined BIMSA in September 2022 as an Associate Professor. His research interests are in algebra and representation theory and applications in mathematical physics. He obtained a PhD in Mathematics from the University of Glasgow. Previously, he has held postdoctoral positions in Amsterdam, Nottingham, York and Heriot-Watt University. Before coming to BIMSA he visi...

    • 1

      Quadratic conductor formulas for motivic spectra

      AbstractWe use the machinery of A1-homotopy theory to study the geometric ramification theory. We define the quadratic Artin conductor for a motivic spectrum on a smooth proper curve and obtain a quadratic refinement of the classical Grothendieck-Ogg-Shafarevich formula. Then we use the non-acyclicity class to formulate a quadratic conductor formula. In some sense, we obtain a quadratic version...