[分析] 請教一個數列與測度

[ericakk (穎 我好思念你...)]

再麻煩高手了 感恩..

Let (Χ,Μ,μ) is a measure space,

1.A finite addtive measure μ is a measure if and only if
    ∞
{E_j}1 in Μ and {E_j} is increasing.


2.If μ(Χ) < ∞, μ is a measure if and only if
    ∞
{E_j}1 in Μ and {E_j} is decreasing.

這兩個證明，我的問題都在「怎麼從左證到右呢？」



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