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Maths rule
(files.catbox.moe)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
https://en.m.wikipedia.org/wiki/Universal_quantification
I usually used it as "for all", but its looks like "for any" is used too
I sit corrected. It's used as an arbitrary singular value within the proof, so for any always felt more appropriate.