Quantum Laurent Positivity for Mutation-Acyclic Cluster Algebras

A mix of human-written and AI-generated textHuman understanding: some partsmath.QA — Quantum Algebramath.RA — Rings and Algebrasmath.RT — Representation Theory

Contributed by 琪越 唐

Version 3 / Sep 29, 2026 / CC BY 4.0

Abstract

We prove quantum Laurent positivity for mutation-acyclic skew-symmetrizable cluster algebras of arbitrary finite rank.

Provenance statement

It took about half a month to obtain the above paper. During this period, I alternated between conversing with GPT-6-Astra and using the Danus system to tackle difficult problems. I provided it with a large number of papers for reference, such as Schiffler's paper on Laurent positivity, Davison's paper on positivity in quantum cluster algebras, and so on. 2026.10.15:The manuscript has completed a full-paper review using Rethlas-OSV, together with a supplementary check of two cited dependencies. No confirmed mathematical errors were reported within the reviewed scope. Rethlas-OSV: https://github.com/OSVerify/Rethlas-OSV

References

  1. A. Berenstein and D. Rupel, Quantum cluster characters of Hall algebras , arXiv:1308.2992v2 (https://arxiv.org/abs/1308.2992v2) (2014).arXiv
  2. A. Berenstein and A. Zelevinsky, Quantum cluster algebras , arXiv:math/0404446v2 (https://arxiv.org/abs/math/0404446v2) (2004).arXiv
  3. B. Davison, Positivity for quantum cluster algebras , arXiv:1601.07918v6 (https://arxiv.org/abs/1601.07918v6) (2017).arXiv
  4. M. Kashiwara, M. Kim, S.-j. Oh and E. Park, Localizations for quiver Hecke algebras , arXiv:1901.09319v2 (https://arxiv.org/abs/1901.09319v2) (2020).arXiv
  5. M. Kashiwara, M. Kim, S.-j. Oh and E. Park, Localizations for quiver Hecke algebras II , arXiv:2208.01255v1 (https://arxiv.org/abs/2208.01255v1) (2022).arXiv
  6. M. Kashiwara, M. Kim, S.-j. Oh and E. Park, Laurent family of simple modules over quiver Hecke algebra , arXiv:2306.15181v1 (https://arxiv.org/abs/2306.15181v1) (2023).arXiv
  7. A. Kleshchev, Lectures on Infinite Dimensional Lie Algebras , lecture notes, University of Oregon, undated. Author's online notes (https://pages.uoregon.edu/klesh/teaching/IDLALN.pdf) (accessed 27 September 2026).link
  8. A. D. Lauda and M. Vazirani, Crystals from categorified quantum groups , arXiv:0909.1810v2 (https://arxiv.org/abs/0909.1810v2) (2011).arXiv
  9. K. Lee and R. Schiffler, Positivity for cluster algebras , Ann. of Math. 182 (2015), 73--125. arXiv:1306.2415v3 (https://arxiv.org/abs/1306.2415v3).arXiv
  10. H. Murata, A diagrammatic approach to reflection functors , arXiv:2506.17070v4 (https://arxiv.org/abs/2506.17070v4), 28 August 2026.arXiv
Show all 15 referencesShow fewer references
  1. D. Rupel, Quantum cluster characters , arXiv:1109.6694v2 (https://arxiv.org/abs/1109.6694v2) (2012).arXiv
  2. D. Rupel, The Feigin tetrahedron , SIGMA 11 (2015), 024, 30 pp. arXiv:1401.4338v2 (https://arxiv.org/abs/1401.4338v2). doi:10.3842/SIGMA.2015.024 (https://doi.org/10.3842/SIGMA.2015.024).arXivDOI
  3. D. E. Speyer, Powers of Coxeter elements in infinite groups are reduced , arXiv:0710.3188v1 (https://arxiv.org/abs/0710.3188v1) (2007).arXiv
  4. P. Tingley and B. Webster, Mirković--Vilonen polytopes and Khovanov--Lauda--Rouquier algebras , arXiv:1210.6921v5 (https://arxiv.org/abs/1210.6921v5) (2015).arXiv
  5. T. Tran, F-polynomials in quantum cluster algebras , arXiv:0904.3291v1 (https://arxiv.org/abs/0904.3291v1) (2009).arXiv

Version history

  1. v1Submitted by 琪越 唐Corrected before publicationSupersededSep 29, 2026
  2. v2Submitted by 琪越 唐Submitted as a new versionSupersededSep 29, 2026
  3. v3Submitted by 琪越 唐Submitted as a new versionCurrentOct 15, 2026