∀

(idea) by Uberfetus Sat Nov 11 2000 at 9:07:16
The universal quantifier, also known as "for all." The proposition ∀x P(x) translates into English as "for all x P(x)" or "for every x P(x)".

It means that P(x) is true for all values of x in the universe of discourse (the domain under consideration). Used extensively in logic.

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