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DTSTART:20250309T070000
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URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-156
SUMMARY:Differential Geometry Working Seminar
CLASS:PUBLIC
DESCRIPTION:ALEX PAWELKO\, UNIVERSITY OF WATERLOO\n\n_Gerbes of Coassociati
 ve Submanifolds and the first Chern class_\n\nWe will define (bundle) gerb
 es\, a generalization of principal\nS^1-bundles\, and define connections o
 n gerbes\, whose corresponding\nforms over a trivialization are 2-forms an
 d whose curvatures are\n3-forms. Then\, we will build a gerbe from coassoc
 iative submanifolds\nof a G_2 manifold\, and study its analogue of the fir
 st Chern class\, an\nintegral cohomology class in degree 3.\n\nMC 5403
DTSTAMP:20260426T072149Z
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