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A Combinatorial Approach to the CUE Joint Moment Problem

  • George Snape
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Abstract

In this paper, we give exact combinatorial expressions for all CUE joint moments on the unit circle, in the case that all exponents are even positive integers, yielding the corresponding asymptotics. We offer two equivalent expressions for these quantities: the first is a sum involving Kostka numbers; the second is related to counting integer matrices (magic squares). As an application of our results, we unify many results in the literature, which were previously disconnected. Moreover, we prove a conjecture of Basor et al. (2018) regarding an irregular conformal block structure.

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Cite

BibTeXRIS
BibTeX
@misc{snape2026combinatorial,
  title = {{A Combinatorial Approach to the CUE Joint Moment Problem}},
  author = {George Snape},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.00599},
  eprint = {2610.00599},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.00599},
}
RIS
TY  - UNPB
TI  - A Combinatorial Approach to the CUE Joint Moment Problem
AU  - George Snape
PY  - 2026
DA  - 2026/10/01
PB  - arXiv
DO  - 10.48550/arxiv.2610.00599
UR  - https://arxiv.org/abs/2610.00599
AB  - In this paper, we give exact combinatorial expressions for all CUE joint moments on the unit circle, in the case that all exponents are even positive integers, yielding the corresponding asymptotics. We offer two equivalent expressions for these quantities: the first is a sum involving Kostka numbers; the second is related to counting integer matrices (magic squares). As an application of our results, we unify many results in the literature, which were previously disconnected. Moreover, we prove a conjecture of Basor et al. (2018) regarding an irregular conformal block structure.
ER  -