摘要给出了n指标形式下（F4）条件的鞅刻划,证明了期望算子可换性,解决了n指标形式下Meyer问题。In this paper, the martingales description of condition (F4) is given, the permutability of expected operater is proved and the Meyer problem under the N-parameter form is solved.
5Gheorghi?? Zb?ganu,Xing Wu Zhuang. Two-parameter filtrations with respect to which all martingales are strong[J] 1982,Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete(4):437～452
6R. Cairoli,John B. Walsh. Stochastic integrals in the plane[J] 1975,Acta Mathematica(1):111～183
