arXiv:2408.11274v3

Exponential prime orbit theorems for Anosov subgroups

Michael Chow, Pratyush Sarkar

math.DSmath.DGmath.NT37A1737D2037A2537C3011M3611N45

Abstract

Let ΓΓ be a Zariski dense Anosov subgroup of a connected semisimple real algebraic group -- these are higher rank analogues of convex cocompact subgroups. Let us measure the Jordan projections with any linear form which is positive on the limit cone of ΓΓ. We prove a corresponding counting theorem with a power saving error term for the conjugacy classes of loxodromic elements in ΓΓ. The proof is based on interpreting the Jordan projections as periods of a natural flow associated to ΓΓ and proving exponential mixing. We also prove the existence of a spectral gap for the Selberg zeta function.

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Audit summary

Audited against arXiv v3

Not a correctness certificate. A “Correct” result may include yellow typos or minor formal corrections that do not affect substantive soundness. It means this audit found no unresolved substantive error under the stated criteria; it does not replace expert scrutiny or formal verification.

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Detailed mathematical audit

Generated August 18, 2026
01Statements3 reported findingsCorrect

The exponential prime-orbit theorem, exponential mixing results for translation flows, resonance expansion, and zeta-function applications are correct under the stated Anosov-subgroup and direction hypotheses.

Theorems 1.1 and 1.11Correct

The prime-orbit asymptotics have the claimed power-saving error

Pages 2, 8–9 and Sections 5–7 · arXiv:2408.11274v3

The Markov coding and transfer-operator continuation produce a simple leading pole and a zero-free strip for the relevant dynamical zeta function. The contour shift and Tauberian step retain the direction and norm restrictions imposed in the theorem, and the non-leading spectrum contributes an exponentially smaller term. The conversion from primitive flow orbits to primitive conjugacy classes has the correct multiplicities.

Theorems 1.9 and 1.10Correct

Essential spectral gaps for Selberg and Ruelle zeta functions

Page 8 and Sections 5–7 · arXiv:2408.11274v3

The transfer-operator determinant identifies zeros of the Selberg zeta function and poles of the Ruelle zeta function in the continued half-plane. Theorem 5.2 leaves only finitely many non-leading spectral points there and isolates the simple leading eigenvalue, producing the stated simple zero or pole. The dependence of the gap on ψΘ(v)\psi_\Theta(v) and ψΘ(v)\|\nabla\psi_\Theta(v)\| is carried through the rescaling, while the weaker continuity-across-strata assertion is not overstated.

Theorems 1.4, 1.6, and 1.7Correct

Exponential mixing and the resonant expansion follow from the spectral estimates

Pages 8–13 and Sections 3–6 · mixing and resonance theorems · arXiv:2408.11274v3

The translation flow is first put in a metric-Anosov/Markov-section model. Dolgopyat estimates give high-frequency contraction, while perturbation theory treats the low-frequency eigenvalue. Laplace inversion yields the stated exponential correlation decay and finite resonant expansion, including the rank-one and general Plücker-representation cases separately.

02Proofs1 reported findingCorrect

The geometric coding, transfer-operator estimates, and analytic continuation arguments form a complete dependency chain for the counting and mixing conclusions.

Sections 3–7Correct and complete

The Markov coding and Dolgopyat argument verify every quantitative input

Metric-Anosov model, transfer operators, and applications · arXiv:2408.11274v3

The paper proves the required regularity of stable and unstable foliations in its model, constructs a finite Markov section, checks non-arithmeticity in the directions used, and obtains uniform operator contraction before applying inversion. The separate treatment of higher-rank representations prevents the rank-one argument from being used outside its valid range.

03Novelty0 reported findingsNo non-novelty findings

No non-novelty findings.

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Paper
arXiv:2408.11274v3
Authors listed
Michael Chow, Pratyush Sarkar
Audit date
August 18, 2026
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