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Singular loci of cominuscule Schubert varieties

โœ Scribed by Robles, C.


Book ID
121502743
Publisher
Elsevier Science
Year
2014
Tongue
English
Weight
608 KB
Volume
218
Category
Article
ISSN
0022-4049

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๐Ÿ“œ SIMILAR VOLUMES


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โœ N. Gonciulea; V. Lakshmibai ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 275 KB

We relate certain ladder determinantal varieties (associated to one-sided ladders) to certain Schubert varieties in SL n /Q, for a suitable n and a suitable parabolic subgroup Q, and we determine the singular loci of these varieties. We state a conjecture on the irreducible components of the singula

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The singular locus of a Schubert variety X ยต in the flag variety for GL n (C) is the union of Schubert varieties X ฮฝ , where ฮฝ runs over a set Sg(ยต) of permutations in S n . We describe completely the maximal elements of Sg(ยต) under the Bruhat order, thus determining the irreducible components of th