SFU Number Theory and Algebraic Geometry Seminar: Peter McDonald
Topic
Tight closure operations in characteristic zero
Speakers
Details
Abstract: Tight closure was introduced by Hochster and Huneke in 1986 and has been a highly effective tool for solving problems in commutative algebra and algebraic geometry. It is also closely connected with the study of singularities defined via the Frobenius in positive characteristic. In this talk, I’ll give an introduction to tight closure (and closure operations in general) as well as its connection to the study of singularities in positive characteristic. Then, I’ll discuss work developing an analogous theory of closure operations in characteristic zero that is closely connected with the study of singularities. This is joint work with Neil Epstein, Rebecca R.G., and Karl Schwede.
Additional Information
Series comments: The Number Theory and Algebraic Geometry (NT-AG) seminar is a research seminar dedicated to topics related to number theory and algebraic geometry hosted by the NT-AG group (Nils Bruin, Imin Chen, Stephen Choi, Katrina Honigs, Nathan Ilten, Marni Mishna).
We normally meet in-person in the indicated room. For online editions, we use Zoom and distribute the link through the mailing list. If you wish to be put on the mailing list, please subscribe to ntag-external using lists.sfu.ca.
