Strong sign-coherency of certain symmetric polynomials, with application to cluster algebras

Details Strong sign-coherency of certain symmetric polynomials, with application to cluster algebras Strong sign-coherency of certain symmetric polynomials, with application to cluster algebras

2010-08-12

arxiv.org/abs/1008.2194v1

Mathematics

Combinatorics

8 pages, Comments are welcome

Scientific paper

For each positive integer n, we define a polynomial in the variables z_1,...,z_n with coefficients in the ring $\mathbb{Q}[q,t,r]$ of polynomial functions of three parameters q, t, r. These polynomials naturally arise in the context of cluster algebras. We conjecture that they are symmetric polynomials in z_1,...,z_n, and that their expansions in terms of monomial, Schur, complete homogeneous, elementary and power sum symmetric polynomials are sign-coherent.

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