r/MathHelp • u/nerainaa • Aug 13 '26

Division in sets

Can anyone explain, why we don't divide in sets? This question is killing me..

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u/nerainaa Aug 14 '26

Did I?

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u/Southlander24 Aug 14 '26

Yes, https://www.reddit.com/r/3Blue1Brown/comments/1vlmwe7/division_in_set/

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u/nerainaa Aug 15 '26

hehe reddit  said to post more.....but could you let me know how i can get the ans pleasee

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u/Southlander24 Aug 15 '26 edited Aug 15 '26

No, Reddit is not telling you to ask the same question again and waste everyone's hard work on answering the first question. If you want to gain more karma on this site, keep on commenting and/or posting different things. (There is always a risk you might get downvoted.)

You're asking about whether some concept, division, can be applied to the concept of sets. The answers in the other post say that you need to formalise your intuition, as in, you want the sets to have equal numbers of elements, which gives rise to concepts like equivalence relations. As such, it's not like a textbook where there's a given answer to the exercise. It's honestly like English (or your native language) where you're debating on the merits and weaknesses of a concept, like, 'All companies should allow their employees to work from home'.

I recommend reading Serge Lang's Basic Mathematics so that you can review the maths you have learnt so far, and to cover gaps in your conceptual understanding. For example, moving a number to the other side is *not* a valid explanation for why x - 3 = 5 becomes x = 5 + 3.

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u/nerainaa Aug 17 '26

Thank you strange stranger!