Companion cluster algebras to a generalized cluster algebra
arXiv:1504.06758
Abstract
We study the -vectors, -vectors, and -polynomials for generalized cluster algebras satisfying a normalization condition and a power condition recovering classical recursions and separation of additions formulas. We establish a relationship between the -vectors, -vectors, and -polynomials of such a generalized cluster algebra and its (left- and right-) companion cluster algebras. Our main result states that the cluster variables and coefficients of the (left- and right-) companion cluster algebras can be recovered via a specialization of the -polynomials.
14 pages, 4 tables