Investigation of subalgebras in hyperalgebra of Chevalley groups, indicating key features for small prime characteristic.
In the hyperalgebra of the r -th Frobenius kernel of a universal Chevalley group over a field of characteristic p > 0, we study some subsets and the subalgebras generated by them and give some results.We are particularly interested in the case that p is 'very small' and the Dynkin diagram is not simply-laced.
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Y. Yoshii (2022) studied this question.
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