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Fixed points under the action of unipotent elements of \(SL_ n\) in the flag variety. (English) Zbl 0458.14019

MSC:
14L17 Affine algebraic groups, hyperalgebra constructions
14L30 Group actions on varieties or schemes (quotients)
14L35 Classical groups (algebro-geometric aspects)
20G15 Linear algebraic groups over arbitrary fields
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