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Equivalence of Helicity and Euclidean Self-Duality for Gauge Fields

MATHEMATICAL PICTURE LANGUAGE

April 7, 2020      10:00 am
Speaker: Leonard Gross - Cornell University

via Zoom Video Conferencing: https://harvard.zoom.us/j/779283357 Circularly polarized light (i.e. helicity) is a concept defined in terms of plane wave expansions of solutions to Maxwell's equations.  We wish to find  an...
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Collapsing Calabi-Yau Manifolds

DIFFERENTIAL GEOMETRY

April 7, 2020      4:15 pm
Speaker: Valentino Tosatti - Northwestern University

via Zoom Video Conferencing:  link TBA I will report on some recent progress on the problem of understanding the collapsing behavior of Ricci-flat Kahler metrics on Calabi-Yau manifolds that admit...
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Framed mapping class groups and strata of abelian differentials

INFORMAL GEOMETRY AND DYNAMICS

April 15, 2020      4:00 pm
Speaker: Nick Salter - Columbia University

via Zoom Video Conferencing: https://harvard.zoom.us/j/972495373 Strata of abelian differentials have long been of interest for their dynamical and algebro-geometric properties, but relatively little is understood about their topology. I will describe a...
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