REVIEW 1 major objections 37 references
ChatGPT 5.4 Pro autonomously generates short proofs resolving multiple open conjectures in algebraic and enumerative combinatorics.
Reviewed by Pith at T0; open to challenge. T0 means a machine referee read the full paper against a public rubric. the ladder, T0–T4 →
T0 review · grok-4.3
2026-06-30 18:09 UTC pith:32WNXGRN
load-bearing objection The paper claims ChatGPT autonomously produced short proofs resolving several open conjectures, but offers no independent verification of those proofs. the 1 major comments →
Short Proofs in Algebraic and Enumerative Combinatorics
The pith
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
Short proofs exist that resolve a conjecture of Defant, Jiang, Marczinzik, Segovia, Speyer, Thomas, and Williams on the echelonmotion operator on modular lattices and consequently yield a new algebraic bijective proof of Dilworth's theorem, some conjectures of Hopkins on statistics on parking functions studied by Stanley and Yin, and two conjectures of Sagan and Wilson on centralizers in the plactic monoid; all of these proofs were obtained autonomously by ChatGPT 5.4 Pro.
What carries the argument
The short proofs autonomously generated by ChatGPT 5.4 Pro applied to the echelonmotion operator, parking function statistics, and plactic monoid centralizers.
Load-bearing premise
The proofs autonomously generated by ChatGPT 5.4 Pro are mathematically correct and successfully resolve the conjectures.
What would settle it
Independent verification that the supplied short proof for the echelonmotion operator on modular lattices establishes the conjectured properties and implies Dilworth's theorem via the stated algebraic bijection.
If this is right
- The conjecture on the echelonmotion operator on modular lattices is resolved.
- A new algebraic bijective proof of Dilworth's classical result is obtained.
- Conjectures of Hopkins on statistics for parking functions are proved.
- Two conjectures of Sagan and Wilson on centralizers in the plactic monoid are settled.
Where Pith is reading between the lines
- If the proofs hold, similar AI-assisted generation could be tested on other open conjectures in enumerative combinatorics to produce candidate resolutions for human checking.
- The results connect to questions about how large language models can locate concise arguments in discrete structures without prior human scaffolding of the solution path.
- Verification protocols for AI-generated combinatorial proofs become a natural next step to determine whether the method scales beyond the three problem families treated here.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript presents several short proofs, all generated autonomously by ChatGPT 5.4 Pro, that are claimed to resolve open conjectures from the literature: a conjecture of Defant et al. concerning the echelonmotion operator on modular lattices (which also yields a new algebraic bijective proof of Dilworth's theorem), several conjectures of Hopkins on statistics on parking functions, and two conjectures of Sagan and Wilson on centralizers in the plactic monoid.
Significance. If the proofs are correct and the resolutions hold, the results would be of interest to researchers in algebraic and enumerative combinatorics by settling multiple open problems and supplying a new proof of a classical theorem. The autonomous AI generation of the proofs is presented as a methodological feature.
major comments (1)
- [Abstract] Abstract: The central claim that the presented proofs resolve the conjectures of Defant et al., Hopkins, and Sagan and Wilson rests on the unverified correctness of the AI-generated arguments. No machine-checked formalization, independent human verification, or explicit cross-check against known results is mentioned, which is load-bearing because subtle gaps in algebraic or bijective arguments can invalidate such resolutions in this field.
Simulated Author's Rebuttal
We thank the referee for their report and for highlighting the importance of verification for claims resolving open conjectures. We address the major comment below.
read point-by-point responses
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Referee: [Abstract] Abstract: The central claim that the presented proofs resolve the conjectures of Defant et al., Hopkins, and Sagan and Wilson rests on the unverified correctness of the AI-generated arguments. No machine-checked formalization, independent human verification, or explicit cross-check against known results is mentioned, which is load-bearing because subtle gaps in algebraic or bijective arguments can invalidate such resolutions in this field.
Authors: We agree that verification is essential for such resolutions. The manuscript presents the complete, short proofs in full detail, allowing direct inspection by readers and experts in algebraic combinatorics. As authors, we manually reviewed each argument for correctness, logical consistency, and agreement with known special cases before inclusion. While the paper does not currently contain an explicit statement to this effect or a machine-checked formalization (as the proofs are not encoded in a proof assistant), we acknowledge that adding such a note would strengthen the presentation. We will revise the abstract and/or introduction to state that the proofs were manually verified by the authors. revision: yes
Circularity Check
No significant circularity; derivations are independent resolutions of external conjectures
full rationale
The manuscript presents new short proofs resolving open conjectures from the literature (Defant et al. on echelonmotion, Hopkins on parking functions, Sagan-Wilson on plactic centralizers). These proofs are claimed to be autonomously generated and are not shown to reduce by construction to any fitted parameters, self-definitions, or prior self-citations. The central claims rest on the content of the proofs themselves rather than on renaming, ansatz smuggling, or load-bearing self-citation chains. The paper is therefore self-contained against external benchmarks consisting of the stated conjectures.
Axiom & Free-Parameter Ledger
axioms (1)
- standard math Standard axioms of lattice theory, monoid theory, and enumerative combinatorics
read the original abstract
We present several short proofs that resolve open problems from the algebraic and enumerative combinatorics literature. First, we consider the echelonmotion operator on modular lattices. We resolve a conjecture of Defant, Jiang, Marczinzik, Segovia, Speyer, Thomas, and Williams and, consequently, obtain a new algebraic bijective proof of a classical result of Dilworth. Second, we consider statistics on parking functions studied by Stanley and Yin and by Hopkins. We prove some conjectures of Hopkins. Third, we consider centralizers in the plactic monoid. We settle two conjectures of Sagan and Wilson. All of these proofs were obtained autonomously by ChatGPT 5.4 Pro.
Figures
Reference graph
Works this paper leans on
-
[1]
B. Alexeev, M. Putterman, M. Sawhney, M. Sellke, and G. Valiant. Short proofs in combinatorics and number theory. arXiv:2603.29961
-
[2]
Short proofs in combinatorics, probability and number theory II
B. Alexeev, M. Putterman, M. Sawhney, M. Sellke, and G. Valiant. Short proofs in combinatorics, probability and number theory II. arXiv:2604.06609
work page internal anchor Pith review Pith/arXiv arXiv
-
[3]
N. Alon. Problems and results in extremal combinatorics—I. Discrete Math., 273 (2003), 31–53
2003
-
[4]
N. Alon. Problems and results in extremal combinatorics—II. Discrete Math., 308 (2008), 4460–4472
2008
-
[5]
N. Alon. Problems and results in extremal combinatorics—III. J. Comb., 7 (2016), 319–337
2016
-
[6]
Armstrong, C
D. Armstrong, C. Stump, and H. Thomas. A uniform bijection between nonnesting and noncrossing partitions. Trans. Amer. Math. Soc., 365 (2013), 4121–4151
2013
-
[7]
E. Barnard. The canonical join complex. Electron. J. Combin., 26 (2019)
2019
- [8]
-
[9]
R. E. Behrend, F. Castillo, A. Chavez, A. Diaz-Lopez, L. Escobar, P. E. Harris, and E. Insko. Partial permu- tohedra. Discrete Comput. Geom., (2025)
2025
-
[10]
Chow and W
C. Chow and W. C. Shiu. Counting simsun permutations by descents. Ann. Combin., 15 (2011), 625–635
2011
-
[11]
Conlon, J
D. Conlon, J. Fox, and B. Sudakov. Short proofs of some extremal results. Combin. Prob. Comput., 23 (2014), 8–28
2014
-
[12]
Conlon, J
D. Conlon, J. Fox, and B. Sudakov. Short proofs of some extremal results II. J. Combin. Theory Ser. B , 116 (2016), 173–196
2016
-
[13]
C. Defant, Y. Jiang, R. Marczinzik, A. Segovia, D. E Speyer, H. Thomas, and N. Williams. Rowmotion and echelonmotion. arXiv:2507.18230
-
[14]
Defant and N
C. Defant and N. Williams. Semidistrim lattices. Forum Math. Sigma, 11 (2023). 16 COLIN DEF ANT
2023
-
[15]
M. M. Deza and K. Fukuda. Loops of clutters. In Coding Theory and Design Theory: Part I Coding Theory , 72–92. Springer, 1990
1990
-
[16]
R. P. Dilworth. Proof of a conjecture on finite modular lattices. Ann. of Math. , 60 (1954), 359–364
1954
-
[17]
C. Greene. An extension of Schensted’s theorem. Adv. Math., 14 (1974), 254–265
1974
-
[18]
S. Hopkins. Order polynomial product formulas and poset dynamics. In Open problems in algebraic combina- torics, volume 110 of Proc. Sympos. Pure Math. , 135–157. Amer. Math. Soc., 2024
2024
-
[19]
S. Hopkins. Two t-analogues of the tree inversion enumerator. arXiv:2510.22385
work page internal anchor Pith review Pith/arXiv arXiv
-
[20]
Iyama and R
O. Iyama and R. Marczinzik. Distributive lattices and Auslander regular algebras. Adv. Math., 398 (2022)
2022
-
[21]
D. E. Knuth. Permutations, matrices, and generalized Young tableaux. Pacific J. Math. , 34 (1970), 709–727
1970
-
[22]
V. Kl´ asz, M. Kleinau, and R. Marczinzik. Classification of Auslander–Gorenstein monomial algebras: The acyclic case. arXiv:2604.02146
-
[23]
https://arxiv.org/abs/2501.09447
V. Kl´ asz, R. Marczinzik, and H. Thomas. Auslander regular algebras and Coxeter matrices. arXiv:2501.09447
-
[24]
Kreweras
G. Kreweras. Une famille de polynˆ omes ayant plusieurs propri´ et´ es ´ enumeratives.Period. Math. Hungar. , 11 (1980), 309–320
1980
-
[25]
La Ricerca Scientifica
A. Lascoux and M.-P. Sch¨ utzenberger. Le mono¨ ıde plaxique. In Noncommutative structures in algebra and geometric combinatorics, Quaderni de “La Ricerca Scientifica” 109, CNR, 1981, 129–156
1981
-
[26]
Marczinzik, H
R. Marczinzik, H. Thomas, and E. Yıldırım. On the interaction of the Coxeter transformation and the row- motion bijection. J. Comb. Algebra, 8 (2024), 359–374
2024
-
[27]
D. I. Panyushev. On orbits of antichains of positive roots. European J. Combin., 30 (2009), 586–594
2009
-
[28]
T. K. Petersen and Y. Zhuang. Zig-zag Eulerian polynomials. European J. Combin., 124 (2025)
2025
-
[29]
T. Roby. Dynamical algebraic combinatorics and the homomesy phenomenon. In Recent trends in combina- torics, volume 159 of IMA Vol. Math. Appl. , 619–652. Springer, 2016
2016
-
[30]
B. E. Sagan. The Symmetric Group, second edition, Graduate Texts in Mathematics 203, Springer, 2001
2001
-
[31]
B. E. Sagan. Combinatorics: The Art of Counting, Graduate Studies in Mathematics 210, American Mathe- matical Society, 2020
2020
-
[32]
B. E. Sagan and A. N. Wilson. Centralizers in the plactic monoid. Semigroup Forum, 110 (2025), 724–744
2025
- [33]
-
[34]
R. P. Stanley. Enumerative Combinatorics, Volume 2, second edition, Cambridge Studies in Advanced Math- ematics 208, Cambridge University Press, 2024
2024
- [35]
-
[36]
Striker and N
J. Striker and N. Williams. Promotion and rowmotion. European J. Combin., 33 (2012), 1919–1942
2012
-
[37]
Thomas and N
H. Thomas and N. Williams. Rowmotion in slow motion. Proc. Lond. Math. Soc., 119 (2019), 1149–1178
2019
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