两指标连续鞅的二变差

2-Variations for two-parameter continuous martingales

两指标连续鞅的二变差黄玲（西安邮电学院基础课部，西安７１００６１；作者，女，３０岁，硕士）Ｍ．Ｓａｎｚ在［１］中对Ｍ∈μ４ｃ定义了“Ｍ的ｒ一变差”Ｐｋｉ（ｚ），证明了ｒ＞５时ｈｅ（ｚ）。０，又经过简单计算得到了ｐｈ（ｚ）一Ｍ及ｎｈ（ｚ）一６（）。，ｒ...

If M∈μ4c,a very simple proof of the existence and related expressions of 2-variation μ2M(z)is achieved. For M ∈ μ4c,p,i,v.,the relation between μ2M(z)and μM(z)is given.