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arXiv · 1312.5487

Projective modules of $0$-Schur algebras

Bernt Tore Jensen·Xiuping Su·Guiyu Yang
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Abstract

We study the structure of the $0$-Schur algebra $S_0(n, r)$ following the geometric construction of $S_0(n, r)$ by Jensen and Su \cite{JS}. The main results are the construction and classification of indecomposable projective modules. In addition, we construct bases of these modules and their homomorphism spaces. We also give a filtration of projective modules, which leads to a decomposition of $S_0(n,r)$ into indecomposable left modules.

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Bernt Tore Jensen, Xiuping Su, Guiyu Yang. 2013-12-19. Projective modules of $0$-Schur algebras. https://arxiv.org/abs/1312.5487

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