And these results not only extend the classical inequalities of martingale Hardy space, but also point out the close affiliation between the Boyd indices of rearrangement invariant martingale space and the characters of the martingales in it.

• 这些结果不仅推广了经典鞅Hardy空间中的不等式,而且深刻地揭示了重排不变鞅空间的Boyd指数和其中鞅性质的密切联系。