Some Explorations on Two Conjectures About Rademacher Sequences

نویسندگان

چکیده

In this paper, we explore two conjectures about Rademacher sequences. Let (εi) be a sequence, i.e., sequence of independent {−1, 1}-valued symmetric random variables. Set Sn = a1ε1 + … anεn for (a1, …, an) ∈ ℝn. The rst conjecture says that P (|Sn| ≤ ‖a‖) ≥ \({\mathbb{R}^n}\) all ℝn and n \(\mathbb{N}\). second ℕ. Regarding the first conjecture, present several new equivalent formulations. These include topological view, combinatorial version strengthened conjecture. prove it holds true when 7.

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ژورنال

عنوان ژورنال: Acta Mathematicae Applicatae Sinica

سال: 2021

ISSN: ['0168-9673', '1618-3932']

DOI: https://doi.org/10.1007/s10255-021-0993-0