On extensions of hook Weyl modules
نویسندگان
چکیده
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 Weyl modules of general linear group $GL_n$ corresponding to hook partitions $h=(a,1^b)$, $h(k)=(a+k,1^{b-k})$.
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ژورنال
عنوان ژورنال: Journal of Pure and Applied Algebra
سال: 2022
ISSN: ['1873-1376', '0022-4049']
DOI: https://doi.org/10.1016/j.jpaa.2021.106971