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Monodromy and Isomonodromy for Linear q-Difference Systems with Coefficient Matrix Ax+B
Abstract
In this paper, we construct canonical fundamental solutions for linear q-difference systems with coefficient matrix Ax+B, develop the associated isomonodromy theory, and study the differential limit as q→1. We determine the asymptotic behavior of generic isomonodromic deformations, and derive explicit formulas for their monodromy data in terms of their asymptotic leading terms. We also show that the differential limit as q→1 recovers the canonical fundamental solutions, the monodromy data, and the isomonodromic deformations of the corresponding differential systems.
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BibTeX
@misc{lin2026monodromy,
title = {{Monodromy and Isomonodromy for Linear $q$-Difference Systems with Coefficient Matrix $Ax+B$}},
author = {Jinghong Lin and Qian Tang and Xiaomeng Xu},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.29520},
eprint = {2608.29520},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.29520},
}
RIS
TY - UNPB
TI - Monodromy and Isomonodromy for Linear q-Difference Systems with Coefficient Matrix Ax+B
AU - Jinghong Lin
AU - Qian Tang
AU - Xiaomeng Xu
PY - 2026
DA - 2026/08/30
PB - arXiv
DO - 10.48550/arxiv.2608.29520
UR - https://arxiv.org/abs/2608.29520
AB - In this paper, we construct canonical fundamental solutions for linear q-difference systems with coefficient matrix Ax+B, develop the associated isomonodromy theory, and study the differential limit as q→1. We determine the asymptotic behavior of generic isomonodromic deformations, and derive explicit formulas for their monodromy data in terms of their asymptotic leading terms. We also show that the differential limit as q→1 recovers the canonical fundamental solutions, the monodromy data, and the isomonodromic deformations of the corresponding differential systems.
ER -