On Multiplier Processes Under Weak Moment Assumptions
Abstract
We show that if V⊂Rn satisfies a certain symmetry condition that is closely related to unconditionality, and if X is an isotropic random vector for which ∥⟨X,t⟩∥Lp≤Lp–√ for every t ∈ Sn−1 and every 1≤p≲logn , then the suprema of the corresponding empirical and multiplier processes indexed by V behave as if X were L-subgaussian.
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Geometric Aspects of Functional Analysis: Israel Seminar (GAFA) 2014–2016
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2099-12-31
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