this post was submitted on 21 Sep 2024
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Nope, it means "for any" as in no matter which one you choose it will be correct.
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.