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arXiv · 2005.00578

On extensions of hook Weyl modules

Mihalis Maliakas·Dimitra-Dionysia Stergiopoulou
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Abstract

We determine the integral extension groups $Ext^1({\Delta}(h),{\Delta}(h(k)))$ and $Ext^k({\Delta}(h),{\Delta}(h(k)))$, where ${\Delta}(h),{\Delta}(h(k))$ are the Weyl modules of the general linear group $GL_n$ corresponding to the hook partitions $h=(a,1^b)$, $h(k)=(a+k,1^{b-k})$.

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BibTeXRIS

Mihalis Maliakas, Dimitra-Dionysia Stergiopoulou. 2020-05-01. On extensions of hook Weyl modules. https://doi.org/10.1016/j.jpaa.2021.106971

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