Galois groups of Schubert problems /

Bibliographic Details
Main Author: Martin Del Campo Sanchez, Abraham
Other Authors: Sottile, Frank (Thesis advisor)
Format: Thesis eBook
Language:English
Published: [College Station, Tex.] : [Texas A&M University], [2012]
Subjects:
Online Access:Link to OAK Trust copy

MARC

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245 1 0 |a Galois groups of Schubert problems /  |c by Abraham Martin Del Campo Sanchez. 
264 1 |a [College Station, Tex.] :  |b [Texas A&M University],  |c [2012] 
300 |a 1 online resource. 
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500 |a "Major Subject: Mathematics" 
588 |a Description from author supplied metadata (automated record created 2012-10-22 13:24:58). 
502 |b Doctor of Philosophy  |c Texas A&M University  |d 2012  |o http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11605 
504 |a Includes bibliographical references. 
516 |a Text (Dissertation) 
520 3 |a The Galois group of a Schubert problem is a subtle invariant that encodes intrinsic structure of its set of solutions. These geometric invariants are difficult to determine in general. However, based on a special position argument due to Schubert and a combinatorial criterion due to Vakil, we show that the Galois group of any Schubert problem involving lines in projective space contains the alternating group. The result follows from a particular inequality of Schubert intersection numbers which are Kostka numbers of two-rowed tableaux. In most cases, the inequality follows from a combinatorial injection. For the remaining cases, we use that these Kostka numbers appear in the tensor product decomposition of sl2C-modules. Interpreting the tensor product as the action of certain Toeplitz matrices and using spectral analysis, the inequality can be rewritten as an integral. We establish the inequality by estimating this integral using only elementary Calculus. 
500 |a Electronic resource. 
650 4 |a Major Mathematics. 
653 |a Schubert calculus 
653 |a Galois groups 
653 |a Schubert problems 
700 1 |a Sottile, Frank,  |e thesis advisor. 
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