Closures of K-orbits in the flag variety for SU*(2n)
classification
🧮 math.RT
math.AG
keywords
closuresflagrationallysingularvarietyavoidancecharacterizeclosure
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We characterize the Sp_{2n} orbits in the flag variety for SL_{2n} with rationally smooth closure via a pattern avoidance criterion, also showing that the singular and rationally singular loci of such orbit closures coincide.
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