The complex cobordism 2-category and its central extensions – Andre Henriques (University of Oxford)

When:
December 7, 2018 @ 10:00 am – 11:00 am
2018-12-07T10:00:00+00:00
2018-12-07T11:00:00+00:00
Where:
Seminar Room 1
Newton Institute
Contact:

I will introduce a symmetric monoidal 2-category whose objects are 0-manifolds, whose 1-morphisms are 1-dimensional smooth cobordisms, and whose 2-morphisms are Riemann surfaces with boundary and cusps. I will introduce a certain central extension by ℝ₊ and explain its relevance in chiral conformal field theory. Finally, I will explain the state of my understanding on the question of classification of such extensions by ℝ₊.