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全部话题 - 话题: cofinite
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j******w
发帖数: 690
1
来自主题: Mathematics版 - Is there such a "measure" on integers?
Here is an example:
For any S\subseteq \Omega, F(S)=0 if and only if S is not cofinite. Otherwis
e, F(S)=1.

of the set of
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