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math.AG2023
On varieties with Ulrich twisted conormal bundles
Vincenzo Antonelli, Gianfranco Casnati, Angelo Felice Lopez +1
We study varieties such that is is an Ulrich vector bundle for some integer . We first prove that such an must be a curve. Then we give several ex…
math.AG2023★ 1 cited
Tangent, cotangent, normal and conormal bundles are almost never instanton bundles
Gianfranco Casnati
In this very short note we give an elementary characteristic free proof of the result claimed in the title (see Theorem 1.2 for a more precise formulation), generalizing a recent r…