Daniel Litt

Algebraic Geometry, Number Theory, etc.

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Betalog

Tag: twisted sheaves

  1. \(SL_4/\mu_2\) and a mod \(8\) congruence

    This is a continuation of a previous post . Recall that we wanted to prove the following claim: Claim. Let \(\rho\) be a representation of \(SL_4\) such that no irreducible subrepresentation of \(\rho\) descends to \(SL_4/\mu_2\). Then i…

  2. Krashen the party

    I'm at UGA for the week, in between SWAG and TAAAG . Today Danny Krashen gave a great talk on this paper of Auel, First, and Williams. The paper is one of the latest in a long tradition of papers which construct counterexamples by making…