Emmy-Noether-Seminar

Date: 24-05-2019Time: 2:30 PM – 3:30 PMLocation: Raum 04.363, Cauerstraße 11, Erlangen

Quadratic refinements of enumerative problems

Marc Levine (Essen)

Abstract: Using a variety of methods, ranging from classical algebraic geometry to modern motivic homotopy theory, a number of classical enumerative invariants, such as Euler characteristics or counts of rational curves, have been refined to invariants in the Grothendieck-Witt ring of quadratic forms. These refinements yield the classical invariants by taking the rank and signature over the reals. We illustrate the theory with a number of examples.

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Event Details

Date:
24-05-2019
Time:
2:30 PM – 3:30 PM
Location:

Raum 04.363, Cauerstraße 11, Erlangen

Event Categories:
Emmy Noether