<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">M. Maliakas</style></author><author><style face="normal" font="default" size="100%">D.-D. Stergiopoulou</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">On extensions of hook Weyl modules</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Pure and Applied Algebra</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2022</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.sciencedirect.com/science/article/pii/S0022404921003121</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">226</style></volume><pages><style face="normal" font="default" size="100%">2022</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">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 hook partitions $h = (a,1^{b}), h(k) = (a+k,1^{b-k})$.</style></abstract></record></records></xml>