sigma additivity中文什么意思

可列可加性

• sigma:    n. 希腊字母表的第十八字母 【动、 ...
• additivity:    附加性; 加成性; 加法性; 加和性 ...
• sigma t:    条件密度

百科释义

In mathematics, additivity and sigma additivity (also called countable additivity) of a function defined on subsets of a given set are abstractions of the intuitive properties of size (length, area, volume) of a set.