2412.05659
Topological groups with tractable minimal dynamics
Gianluca Basso, Andy Zucker
correctmedium confidence
- Category
- Not specified
- Journal tier
- Strong Field
- Processed
- Sep 28, 2025, 12:56 AM
- arXiv Links
- Abstract ↗PDF ↗
Audit review
The paper’s Theorem 9.20 rigorously proves the equivalences between TMD/CMD/EA and the existence of G-skeletons with minimality+ED+Ramsey (and precompactness in the CMD case), and identifies X_Ω ≅ M(G) under these hypotheses. The model’s write-up tries to rederive these results but makes essential missteps: it incorrectly builds a skeleton whose levels are all M(G) with identity bonding maps (violating the skeleton definition that requires level metrics to be compatible and, in practice, to be the ∂σ-quotient with compatibility points), gives a flawed “single g works for all coordinates” argument for minimality, implicitly uses an infinite join in the semilattice when only finite joins are available, and replaces the paper’s central Ramsey⇒M(G) equivalence (Theorem 9.19) with an undeveloped universality argument. The conclusions match the paper, but the proof is not sound.
Referee report (LaTeX)
\textbf{Recommendation:} minor revisions \textbf{Journal Tier:} strong field \textbf{Justification:} The paper provides a clean and far-reaching abstract KPT correspondence via G-skeletons, yielding new characterizations of TMD/CMD/EA and structural insights into M(G). The arguments are coherent and build systematically on ED/minimality transfer and a Ramsey/oscillation-stability equivalence. Minor clarifications and signposting would improve readability, but the mathematics appears correct.