/sci/ - Science & Math » Thread #12644714

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Anonymous Sat 30 Jan 07:29:40 2021 No.12644714 View Reply Original Report

Quoted By: >>12645659 >>12645779

Are there any non-infinite sets {a,b} such that a?b and |a|=|b|? Or is it infinite sets only?

Anonymous

Anonymous Sat 30 Jan 2021 16:32:54 No.12645659 Report

Quoted By: >>12645722

>>12644714
Only infinite sets. This follows intuitively - all subsets of a set X that are NOT proper subsets of X will contain less elements than X; all subsets of X containing the same number of elements as X are proper subsets.

Anonymous

Anonymous Sat 30 Jan 2021 16:46:41 No.12645722 Report

Quoted By:

>>12645659
X'D Jesus dude proper subset means its included in a set but not the other way around.it doesnt mean subset with the same number of elements thats the set itself kek

Anonymous

Anonymous Sat 30 Jan 2021 17:10:06 No.12645779 Report

Quoted By:

>>12644714
That’s literally the definition of a Dedekind-infinite set.

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