/sci/ - Science & Math

Anonymous Sun Jul 12 17:22:18 2020 No.11894492 [View]
File: 20 KB, 438x480, 9y4mn.jpg [View same] [iqdb] [saucenao] [google]

>>11894473
>cardinality is a necessary, but not sufficient condition for isomorphism then?
As long as you are dealing with functions of any sort, yes. An isomorphism always has an inverse, and so it is a bijection, and hence the cardinalities coincide.
>It gave me an inspiration for a few ideas that I want to try and prove now
Nice!

>>	Anonymous Wed Jun 3 02:49:58 2020 No.11757239 [View] File: 20 KB, 438x480, 9y4mn.jpg [View same] [iqdb] [saucenao] [google] /gmmg/ >>11756128 It was midnight. >>11756892 >logic, set theory Try logic or axiomatic set theory. >proofs All of them.

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/sci/ - Science & Math

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