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Author

Rafał Meller

2 papers indexed here

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Preprint Oct 2026

Moment estimates for chaoses with regular moment growth

We give two-sided moment estimates for decoupled chaoses of any order generated by independent symmetric random variables with regular moment growth: $\|X\|_{2p}\le K\|X\|_p$ for every $p\ge1$. The estimates involve only the coefficient tensor and the one-dimensional tails. They use the partition norms of Adamczak and...

Rafał Meller · 0 citations
Preprint Sep 2026

Operator-norm Sudakov minoration for Gaussian chaos of order two

We prove that an operator-norm separated family of matrices satisfies $\mathbb{E}\sup_{A\in T} G^{T}AG'\geq ca\log |T|$, where G,G'are independent standard Gaussian vectors and a is the separation. The main information estimate concerns arbitrary separated coisometries: conditional entropy is bounded by a source-depend...

W. Bednorz, Rafał Martynek, Rafał Meller · 0 citations

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