Geodesic
Weyl submodules in the restrictions of representations of simple algebraic groups to subgroups $SL_2(K)$
Trudy Instituta matematiki, Tome 31 (2023) no. 2, pp. 57-62.

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Under certain restrictions, Weyl submodules with small highest weights in the restrictions of irreducible representations of simple algebraic groups to subsystem subgroups of type $A_1$ over a field of positive characteristic are found. 
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A. A. Osinovskaya. Weyl submodules in the restrictions of representations of simple algebraic groups to subgroups $SL_2(K)$. Trudy Instituta matematiki, Tome 31 (2023) no. 2, pp. 57-62. http://geodesic.mathdoc.fr/item/TIMB_2023_31_2_a6/

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