AI summary · arXiv: 2611.02195v1 · math.PR
The multivariate Berry-Esseen theorem with an absolute constant
The essentials
The paper proves a dimension-independent multivariate Berry–Esseen bound over convex sets, with universal constant 980.
Based on the abstract only: check the details in the original paper.
Question
Can the multivariate Berry–Esseen inequality for sums of independent random vectors be bounded by a constant that does not depend on dimension? What moment conditions suffice for such a bound?
Method
For independent centered vectors in R^d whose covariance matrices sum to the identity, the paper bounds the distance between their sum and a standard multivariate normal, uniformly over convex sets. The bound uses the sum of the vectors’ third absolute moments, requires only finite third moments, and gives a universal constant that can be chosen as 980.
Findings
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Result
The convex-set distance from the sum to the standard multivariate normal is at most a universal constant times the sum of the third moments of the summands.
See the passage in the paper
For independent centered random vectors $X_1,\ldots,X_n\in\mathbb{R}^d$ whose covariance matrices sum to $I_d$, we show that the distance between the distribution of their sum and $N(0,I_d)$, measured uniformly over convex sets, is at most $C_0\sum_{i=1}^n\mathbb{E}\|X_i\|_2^3$ for a universal constant $C_0$.
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Result
The bound is uniform in dimension, number of summands, and their distributions.
See the passage in the paper
The bound requires only finite third moments and holds uniformly in the dimension, the number of summands, and their distributions.
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Result
The universal constant in the bound can be taken to be 980.
See the passage in the paper
In particular, $C_0$ can be chosen to be $980$.
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Result
The result also gives the corresponding Berry–Esseen bound for independent identically distributed vectors.
See the passage in the paper
It also yields the corresponding bound for independent and identically distributed vectors.
Limitations
- The stated theorem applies to centered independent random vectors whose covariance matrices sum to the identity; the abstract does not claim coverage beyond these conditions.
Why it matters
The result establishes a multivariate Berry–Esseen inequality with a constant independent of dimension. As presented by the authors, it provides a uniform bound under only finite third-moment assumptions, including a corresponding result for identically distributed vectors.
Written by AI from the paper. Passages are checked word for word against the text we analysed; the rest may contain errors.
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Prior work it builds on
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Multivariate Normal Approximation by Stein's Method: The Concentration Inequality ApproachLouis H. Y. Chen, Xiao Fang · 2011 · arXiv: Probability · preprint, not peer reviewed · cited 40 times · Not summarized yet
Multivariate Normal Approximation by Stein's Method bounds normal approximation for independent vector sums using a concentration-inequality approach and a dimension-dependent error.
Abstract
The concentration inequality approach for normal approxima- tion by Stein's method is generalized to the multivariate setting. We use this approach to prove a non-smooth function distance for multivariate normal approximation for standardized sums of k-dimensional indepen- dent random vectors W = Pn=1 Xi with an error bound of order k 1/2 where = P n=1 E|Xi| 3 . For sums of locally dependent (unbounded) ran- dom vectors, we obtain a fourth moment bound which is typically of order Ok(1/ p n), as well as a third moment bound which is typically of order
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An estimate of the remainder term in the multidimensional central limit theoremS. Nagaev · 1976 · cited 40 times · Not summarized yet
An estimate of the remainder term in the multidimensional central limit theorem is earlier work on error bounds for multidimensional normal approximation.
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The accuracy of the Gaussian approximation to the sum of independent variatesAndrew C. Berry · 1941 · Transactions of the American Mathematical Society · cited 846 times · Not summarized yet
The accuracy of the Gaussian approximation to the sum of independent variates is earlier work on Gaussian approximation for sums of independent variables.
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On the Rate of Convergence in the Multivariate CLTF. Götze · 1991 · Annals of Probability · cited 335 times · Not summarized yet
On the Rate of Convergence in the Multivariate CLT is earlier work on convergence rates in the multivariate central limit theorem.
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A Lyapunov type bound in $R^d$@@@A Lyapunov-type bound in $R^d$V. Bentkus, V. Bentkus · 2004 · cited 42 times · Not summarized yet
A Lyapunov-type bound in R^d is earlier work on dimension-specific bounds for multivariate normal approximation.
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Updated on 9 November 2026.
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