Fabio Tanturri
Università degli Studi di Genova
Friday, 3 July 2026 – 14:30-15:30 – room T.1.1
On a conjecture on aCM and Ulrich sheaves on degeneracy loci
ABSTRACT
A conjecture by Kleppe and Miró-Roig states that suitable twists by line bundles of the exterior powers of the normal sheaf of a standard determinantal locus are arithmetically Cohen–Macaulay, and even Ulrich when the locus is linear determinantal. In a recent paper V. Benedetti and I partially prove this conjecture by constructing suitable locally free resolutions of such sheaves.