17/09/23 10:47:57.94 ijmw1E52.net
>>497
> スレ主のような"訳の分からない人"の相手はホントに疲れますｗ
目には目を。コピペにはコピペを。です。
ただ淡々と貼り付ければよいのです。
URLﾘﾝｸ(en.wikipedia.org)
The set of natural numbers is a proper subset of the set of rational numbers; likewise, the set of points in a line segment is a proper subset of the set of points in a line.
These are two examples in which both the subset and the whole set are infinite, and the subset has the same cardinality
(the concept that corresponds to size, that is, the number of elements, of a finite set) as the whole; such cases can run counter to one's initial intuition.