Seminar

An overview of measures of irrationality

Speaker
Nathan Chen (Columbia)
Date
Mon, Mar 11 2024, 3:45pm
Location
384I

The classical question of determining which varieties are rational has led to a huge amount of interest and activity. On the other hand, one can consider a complementary perspective - given a smooth projective variety whose nonrationality is known, how "irrational" is it? I will survey what is currently known, with an emphasis on surfaces and open problems.

(caution: unusual date and location)