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arXiv · 1004.2233

Affine geometric crystals in unipotent loop groups

Abstract

We study products of the affine geometric crystal of type A corresponding to symmetric powers of the standard representation. The quotient of this product by the R-matrix action is constructed inside the unipotent loop group. This quotient crystal has a semi-infinite limit, where the crystal structure is described in terms of limit ratios previously appearing in the study of total positivity of loop groups.

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Thomas Lam, Pavlo Pylyavskyy. 2010-04-13. Affine geometric crystals in unipotent loop groups. https://arxiv.org/abs/1004.2233

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