seminar: Moduli of orbifold sheaves and applications to arithmetic and non-commutative algebra

speaker: Max Lieblich (Princeton University)

abstract: Stacks of stable sheaves on projective surfaces are known to have good regularity properties for large values of the discrete invariants: they are irreducible, normal, and lci. I will discuss similar results for stacks of stable twisted sheaves on certain orbisurfaces, with an emphasis on their applications to 1) a basic problem about Brauer groups of function fields and 2) a classical question on the Hasse principle for geometrically rational varieties over global fields.

timetable:
Sat 28 Jun, 10:45 - 11:45, Aula Dini
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