Generators of rank 2 cluster algebras of affine types via linearization of seed mutations

Abstract

From the viewpoint of integrable systems on algebraic curves, we discuss linearization of birational maps arising from the seed mutations of types $A_1^{(1)}$ and $A_2^{(2)}$, which enables us to construct the set of all cluster variables generating the corresponding cluster algebras. These birational maps respectively induce discrete integrable systems on algebraic curves referred to as the types of the seed mutations from which they are arising. The invariant curve of type $A_1^{(1)}$ is a conic, while the one of type $A_2^{(2)}$ is a singular quartic curve. By applying the blowing-up of the singular quartic curve, the discrete integrable system of type $A_2^{(2)}$ on the singular curve is transformed into the one on the conic, the invariant curve of type $A_1^{(1)}$. We show that the both discrete integrable systems of types $A_1^{(1)}$ and $A_2^{(2)}$ commute with each other on the conic, the common invariant curve. We moreover show that these integrable systems are simultaneously linearized by means of the conserved quantities and their general solutions are respectively obtained. By using the general solutions, we construct the sets of all cluster variables generating the cluster algebras of types $A_1^{(1)}$ and $A_2^{(2)}$, respectively.

30 pages, 6 figures. arXiv admin note: text overlap with arXiv:1801.10320

References in corpus (4)

• Cluster integrable systems, q-Painleve equations and their quantization
• Investigation into the role of the Laurent property in integrability
• Bilinear equations and $q$-discrete Painlevé equations satisfied by variables and coefficients in cluster algebras
• Mutations of the cluster algebra of type ${\mathbf{A}}_1^{(1)}$ and the periodic discrete Toda lattice

Cited by in corpus (2)

• A family of integrable and non-integrable difference equations arising from cluster algebras
• Periodicity, linearizability and integrability in seed mutations of type $A_N^{(1)}$