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Michael Joyce's user avatar
Michael Joyce's user avatar
Michael Joyce's user avatar
Michael Joyce
  • Member for 13 years, 6 months
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  • New Orleans, LA, USA
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Why do we care about Schur Positivity
This is a great answer!
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Closed orbits for the action of general linear groups
changed 'close' to 'closed' in title to clarify meaning of actual question
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Symmetric group action on Young Tableaux
One reference for the crystal action is Section 1.8 of Manivel's Symmetric Functions, Schubert Polynomials, and Degeneracy Loci
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A natural Lascoux-Schützenberger involutions on plane partitions
The title of the article is often translated into English as "Arrays and the combinatorics of Young tableaux". I couldn't find it online, but you might look at this paper arxiv.org/abs/math/0504299, which has a very brief (two page) summary of the main notions associated with arrays in it and is based on a similar viewpoint as the aforementioned paper.
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books well-motivated with explicit examples
There is also Silverman and Tate's "Rational Points on Elliptic Curves" which is even more explicit and introduces the subject to undergraduate students.
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Understanding Faltings's Theorem
corrected the title of Hindry and Silverman's text, in case the OP wants to consult it
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Is there a standard name for this poset
added 49 characters in body
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Is there a standard name for this poset
I guess I abuse language and would call this the Bruhat order. Or I might call it the $Gr(k,n)$-Bruhat order. I think this is what most of the Schubert calculus world would do, but there may be a different name in other contexts.
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