MATH - Seminar on Pure Mathematics - Counting sheaves on Calabi-Yau 4-folds
3:15pm - 4:15pm
https://hkust.zoom.us/j/9584764665 (Passcode: dt4fold)
We define a localised Euler class for isotropic sections, and isotropic cones, in SO(N) bundles. We use this to give an algebraic definition of Borisov-Joyce's sheaf counting invariants on Calabi-Yau 4-folds. When a torus acts, we prove a localisation result. This talk is based on the joint work with Richard. P. Thomas.
Event Format
Speakers / Performers:
Dr. Jeongseok OH
Korea Institute for Advanced Study (KIAS)
Language
English
Recommended For
Alumni
Faculty and staff
PG students
UG students
Organizer
Department of Mathematics