On the best constant in the weak type inequality for the square function of a conditionally symmetric martingale

Ose[combining cedilla]kowski, Adam

Statistics & Probability Letters, 2009, vol. 79, issue 13, 1536-1538

Abstract: Let f be a real conditionally symmetric martingale and S(f) denote its square function. The purpose of this note is to show that the inequality due to Bollobás, is sharp.

Date: 2009
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