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Aravind Asok: Counting projective modules over arithmetic rings

Tid: Ti 2017-04-25 kl 15.00 - 16.00

Plats: Institut Mittag-Leffler, Auravägen 17, Djursholm

Medverkande: Aravind Asok, The University of Southern California

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Coffee: 14:30-15:00
Abstract
: It is a classical fact that if R is the ring of integers in a number field or the ring of regular functions on a smooth affine curve over a finite field, then the Picard group of R is finite. I will discuss some higher-dimensional/higher-rank variants of this result.