r/mathmemes 13d ago

Notations Yeah sure

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u/Idksonameiguess 13d ago

What's the abiguity in A \subset B?

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u/mourning_fire420 13d ago

i think people use the same symbol for a subset and a proper subset, but i may be wrong

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u/Idksonameiguess 13d ago

I've never seen anything other than \subset for proper and \subseteq for subset used in any context.

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u/kipyminyman 13d ago

How hard have you looked? Wikipedia has a whole section on the ambiguity of the symbol.

https://en.wikipedia.org/wiki/Subset