Author

C. Anghel

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Preprint Sep 2026

Smooth Counterexamples to the Eisenbud--Schreyer--Weyman Ulrich Existence Problem

In their 2003 article in the Journal of the American Mathematical Society, Eisenbud, Schreyer and Weyman asked whether every embedded projective variety carries an Ulrich sheaf. In 2017 Beauville proposed a numerical route toward a surface with no Ulrich bundles: in Picard rank one, existence forces $H^2\ge K_S^2-8\chi...

C. Anghel · 5 citations