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arXiv · 2410.16918

Projective modules for the subalgebra of degree 0 in a finite-dimensional hyperalgebra of type $A_1$

Yutaka Yoshii
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Abstract

We describe the structure of projective indecomposable modules for the subalgebra consisting of the elements of degree 0 in the hyperalgebra of the $r$-th Frobenius kernel for the algebraic group ${\rm SL}_2(k)$, using the primitive idempotents which were constructed before by the author.

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Yutaka Yoshii. 2024-10-22. Projective modules for the subalgebra of degree 0 in a finite-dimensional hyperalgebra of type $A_1$. https://doi.org/10.1090/proc%2F13934

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