2111.12752
Uniqueness of Conformal Measures and Local Mixing for Anosov Groups
Sam Edwards, Minju Lee, Hee Oh
correctmedium confidence
- Category
- Not specified
- Journal tier
- Strong Field
- Processed
- Sep 28, 2025, 12:56 AM
- arXiv Links
- Abstract ↗PDF ↗
Audit review
The uploaded paper proves that for any Zariski-dense P–Anosov subgroup Γ of a connected semisimple real algebraic group G of rank ≤ 3 and any ψ in D*_Γ, every (Γ,ψ)-conformal probability measure on F = G/P is supported on the limit set Λ and equals the Patterson–Sullivan measure ν_ψ. This is Theorem 1.4 and is established via local mixing for generalized BMS measures, the Hopf–Tsuji–Sullivan dichotomy (Burger–Landesberg–Lee–Oh), and an appeal to Lee–Oh for uniqueness within the PS class . The candidate solution reaches the same conclusion but relies on two unjustified steps: (i) it asserts a Shadow Lemma for arbitrary (Γ,ψ)-conformal measures (not just PS measures), and (ii) it uses equivalence with ν_ψ to transfer ergodicity, which is not established. The paper avoids these gaps by a different route and is correct; the model’s proof is therefore flawed.
Referee report (LaTeX)
\textbf{Recommendation:} minor revisions
\textbf{Journal Tier:} strong field
\textbf{Justification:}
This note delivers a clean, conceptually natural extension of Sullivan’s uniqueness of conformal measures to Zariski-dense Anosov subgroups in rank at most three. It deftly combines local mixing for generalized BMS measures with a higher-rank Hopf–Tsuji–Sullivan dichotomy and an existing uniqueness theorem within the PS class. The argument is tight and relies on recent advances. Minor editorial improvements would make the exposition smoother and more accessible.