Inverse moment problem for non-Abelian Coxeter double Bruhat cells

preprint2016arXivOpen access

Abstract

We solve the inverse problem for non-Abelian Coxeter double Bruhat cells in terms of the matrix Weyl functions. This result can be used to establish complete integrability of the non-Abelian version of nonlinear Coxeter-Toda lattices in GLnGL_n.

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