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Seminar

COMA Seminar Series on FFRT: "The Frobenius morphism in invariant theory" March 28, 2024 (10:00 AM PDT - 11:00 AM PDT)
Parent Program:
Location: SLMath: Eisenbud Auditorium, Online/Virtual
Speaker(s) Špela Špenko (Université Libre de Bruxelles)
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The Frobenius morphism in invariant theory

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Let R be the homogeneous coordinate ring of the Grassmannian Gr(2,n) defined over an algebraically closed field of characteristic p. We may regard it as a module over R^{p^e}. We will describe the decompositions into indecomposables. In particular, we obtain that R satisfies the FFRT property. We will also discuss geometric consequences. This is a joint work with Theo Raedschelders and Michel Van den Bergh.

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The Frobenius morphism in invariant theory