In this paper we construct primitive idempotents of the hyperalgebra for the $r$-th Frobenius kernel of the algebraic group ${\rm SL}(2,k)$.
A Conjectural Algorithm for Simple Characters of Algebraic Groups
Coxeter combinatorics for sum formulas in the representation theory of algebraic groups
Some generating sets of the Jacobson radical of the hyperalgebra of (SL$_2$)$_r$
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