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The “∀” is the universal quantification symbol, it's a shorthand character in symbolic logic. It's read as “for all” when written in a string of symbols when say, writing a formal proof.

The “∀” is the universal quantification symbol, it's a shorthand character in symbolic logic. It's read as “for all” when written in a string of symbols when say, writing a formal proof.

The phrases “for all”, is used so frequently in mathematics that people have found it useful to adopt the following symbol for shorthand. The symbol “∀” means “for all” or “for any”.

“We are not the stuff that abides, but pattern that perpetuate themselves.” ― Norbert Wiener, The Human Use of Human Beings: Cybernetics and Society, 1949.

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Last updated: September 25, 2020 |