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摘要
Let f = (f(n)) (n >= 0) be a martingale, 0 < p < infinity, 1 <= q < infinity. In this paper we obtain a L-p,L-q-version of Burkholder-Gundy-Davis martingale inequality parallel to S(f) parallel to(p,q) approximate to M(f) parallel to (p,q), by means of rearrangement technique.
