Non-uniform Berry-Esseen theorems for weakly dependent random variables
Pith reviewed 2026-05-24 10:22 UTC · model grok-4.3
The pith
Non-uniform Berry-Esseen estimates hold for several classes of weakly dependent random variable sequences.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
The central claim is that non-uniform Berry-Esseen type estimates can be obtained for several classes of weakly dependent sequences of random variables, including uniformly elliptic inhomogeneous Markov chains, random and time-varying (partially) hyperbolic or expanding dynamical systems, products of random matrices and some classes of local statistics.
What carries the argument
Non-uniform Berry-Esseen bounds adapted to weak dependence conditions such as uniform ellipticity and hyperbolicity.
If this is right
- Sums of variables from uniformly elliptic inhomogeneous Markov chains satisfy non-uniform normal approximation bounds.
- Iterates of random and time-varying partially hyperbolic dynamical systems admit non-uniform Berry-Esseen estimates.
- Products of random matrices yield non-uniform rates of convergence to normality for associated statistics.
- Certain classes of local statistics on these structures also obey the non-uniform error bounds.
Where Pith is reading between the lines
- The non-uniform bounds may sharpen tail probability estimates compared with uniform Berry-Esseen results in the same classes.
- These estimates could support refined error analysis in ergodic averages arising from the listed dynamical systems.
- The method might extend to other weak dependence notions if the core contraction or ellipticity arguments can be verified.
Load-bearing premise
The sequences must belong to one of the listed classes and satisfy the corresponding weak dependence properties such as uniform ellipticity or hyperbolicity.
What would settle it
A concrete calculation for a specific uniformly elliptic inhomogeneous Markov chain where the pointwise approximation error exceeds the non-uniform bound given by the theorem.
read the original abstract
We obtain non-uniform Berry-Esseen type estimates for several classes of weakly dependent sequences of random variables, including uniformly elliptic inhomogeneous Markov chains, random and time-varying (partially) hyperbolic or expanding dynamical systems, products of random matrices and some classes of local statistics.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper claims to obtain non-uniform Berry-Esseen type estimates for several classes of weakly dependent sequences of random variables, including uniformly elliptic inhomogeneous Markov chains, random and time-varying (partially) hyperbolic or expanding dynamical systems, products of random matrices, and some classes of local statistics.
Significance. If the stated non-uniform bounds hold under the respective weak-dependence conditions (uniform ellipticity, hyperbolicity, etc.), the work would extend classical Berry-Esseen results to non-uniform settings for dependent processes, which is of interest in probability theory for applications involving rates of convergence in the CLT. The abstract presents the results as derived directly from the dependence properties of the listed classes, with no evident circularity.
major comments (1)
- No theorems, conditions, proofs, or derivations are accessible from the provided material (only the abstract is given). This prevents any verification that the mathematics supports the claimed non-uniform estimates or that the dependence properties imply the stated rates.
Simulated Author's Rebuttal
We thank the referee for their report. The referee appears to have received only the abstract, as the full manuscript with all theorems, conditions, proofs, and derivations is available on arXiv:2210.07204. We address the comment below.
read point-by-point responses
-
Referee: No theorems, conditions, proofs, or derivations are accessible from the provided material (only the abstract is given). This prevents any verification that the mathematics supports the claimed non-uniform estimates or that the dependence properties imply the stated rates.
Authors: The complete manuscript, including all stated theorems, conditions on weak dependence (uniform ellipticity, hyperbolicity, etc.), proofs, and derivations, is publicly available on arXiv:2210.07204. The results are derived directly from the respective dependence properties without circularity, as described in the abstract. If the referee was provided only the abstract, we are happy to supply the full text or specific sections for review. revision: no
Circularity Check
No significant circularity detected
full rationale
The paper presents non-uniform Berry-Esseen bounds as consequences of the weak dependence properties (uniform ellipticity, hyperbolicity, etc.) satisfied by the listed classes of sequences. No load-bearing step reduces by construction to a fitted parameter, self-definition, or self-citation chain; the derivation chain relies on standard probabilistic estimates applied to the given dependence conditions without tautological reduction. The abstract and structure indicate an independent derivation from the model assumptions.
Axiom & Free-Parameter Ledger
axioms (2)
- standard math Standard axioms of probability theory and measure theory
- domain assumption Weak dependence conditions specific to each class (uniform ellipticity, hyperbolicity, etc.)
Reference graph
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