Pushforwards of Tilting Sheaves
classification
🧮 math.AG
math.RT
keywords
tiltingsheafproducepushforwardsheavessomeundervarieties
read the original abstract
We investigate the behaviour of tilting sheaves under pushforward by a finite Galois morphism. We determine conditions under which such a pushforward of a tilting sheaf is a tilting sheaf. We then produce some examples of Severi Brauer flag varieties and arithmetic toric varieties in which our method produces a tilting sheaf, adding to the list of positive results in the literature. We also produce some counterexamples to show that such a pushfoward need not be a tilting sheaf.
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