WALL-CROSSING INVARIANT COMBINATIONS OF WELSCHINGER NUMBERS FOR RATIONAL SURFACES (Sergey Finashin, Ankara))

27.04.2026 14:00 – 16:00

Abstract:
We refine the real enumerative invariants not sensitive to chang- ing the real structure that we elaborated in our previous paper for del Pezzo surfaces, and extend these refined invariants to arbitrary rational surfaces.
The definition requires a choice of an auxiliary conic bundle and of a P
in- structure.
We prove independence of our invariants of these choices and provide recursive relations for computing these invariants.

Lieu

Bâtiment: Conseil Général 7-9

Room 1-15, Séminaire "Fables Géométriques"

entrée libre