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In [[logic]] existence is a quantifier, the "existential quantifier", symbolized by ∃, a backwards capital E. To symbolize "Four leaf clover ...positions of the form "Some A are B.", a form logicians call [[existential quantifier|existential]]. If neither A nor B includes the idea of existence, then "so

∀, the [[universal quantifier]], is pronounced "for all". It allows us to state a general property. Here