A funny gameplay: My University Is Better Than Your University
by Zizheng Fang
by Zizheng Fang
If you can’t solve a problem, then there is an easier problem you can solve: find it. -George Polya
Claim: 令 $(X, \mathcal{F})$ 為可測空間。令 $g: X \to \mathbb{R}$ 為可測函數,則 $$\inf_{\mathbb{P} \in \mathcal{P}(X)} \int_X g(x) d\mathbb{P}(x) = \in...
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