Relation between two geometrically defined bases in representations of $GL_n$
Representation Theory
2007-05-23 v2 Algebraic Geometry
Abstract
Let be an irreducible representation of group , which appears as a submodule in , where is the tautological -dimensional representation of , and is a non-negative integer. On the one hand, following refs [Gi] and [BG] one can produce a basis in using irreducible components of Sringer fibers over a nilpotent matrix in , whose Jordan blocks correspond to the highest weight of . On the other hand, one can produce a basis in by Mirkovi\'c-Vilonen cycles, a construction that works for an arbitrary reductive group . In this note we prove that the resulting to bases coincide.
Cite
@article{arxiv.math/0411252,
title = {Relation between two geometrically defined bases in representations of $GL_n$},
author = {Alexander Braverman and Dennis Gaitsgory and Maxim Vybornov},
journal= {arXiv preprint arXiv:math/0411252},
year = {2007}
}