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arXiv · 2306.12004

Ext-groups in the Category of Strict Polynomial Functors

Van Tuan Pham
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Abstract

The aim of this paper is to study, by using the mathematical tools developed by Chalupnik, Touze, and Van der Kallen, the effect of the Frobenius twist on Ext-group in the category of strict polynomial functors. As an application, we obtain explicit formulas of cohomology of the orthogonal groups and symplectic ones.

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Van Tuan Pham. 2023-06-21. Ext-groups in the Category of Strict Polynomial Functors. https://doi.org/10.1093/imrn%2Frnz284

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