A non-commutative discrete first Painlev\'e hierarchy: the Lax pair approach
nlin.SImath-phmath.MPmath.RA2026-05v1license
Abstract
Using a non-commutative analogue of the isomonodromic problem associated with the discrete first Painlev\'e hierarchy, we construct a non-commutative version of this hierarchy, denoted by . We show that both hierarchies, and , can be expressed in terms of the polynomials , which we call the Svinin polynomials. We also derive a reduction of the non-commutative Volterra lattice hierarchy to the hierarchy and present explicit continuous limits for the first three members of the , thereby recovering non-commutative analogues of the first three members of the differential first Painlev\'e hierarchy.
Cite
@article{arxiv.2605.29722,
title = {A non-commutative discrete first Painlev\'e hierarchy: the Lax pair approach},
author = {Irina Bobrova},
journal= {arXiv preprint arXiv:2605.29722},
year = {2026}
}