Measures of irrationality for algebraic varieties

Algebra and Number Theory Seminar

Meeting Details

For more information about this meeting, contact Allyson Borger, Kirsten Eisentraeger, Jack Huizenga, Mihran Papikian, Ae Ja Yee, John Lesieutre.

Speaker: Robert Lazarsfeld, Stony Brook

Abstract: Recall that an algebraic variety is said to be rational if it contains a Zariski open subset isomorphic to a Zariski open subset of projective space. Issues of rationality have been the subject of a great deal of recent interest and progress, but most varieties aren't rational. I will survey a growing body of work devoted to a complementary question, namely: how can one measure and control "how irrational" is an irrational variety?

Room Reservation Information

Room Number: 106 McAllister

Date: 11/07/2019

Time: 11:00am - 11:50am