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  1. ...be the smallest successor set. Now it is easy to verify that any intersection of successor sets is a successor set; in particular, the intersection of all...

  2. ...regular class will go out and read evening school would not say there is no intersection , which is also pretty good! May be lively because of my personality...

  3. ...集合論最基本的關係符號,事實上就是以邏輯關係來說明,有包含〔subset〕、交集〔 intersection 〕及聯集〔union〕。首先,是等號〔=〕的定義,兩個集合 A 及 B...