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What does '↔' stand for in first order logic?
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AND
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IFF
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XOR
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IMPLIES
That's Correct!
It's Wrong!
In first-order logic, the symbol '↔' represents the logical connective for biconditional or "if and only if" (IFF). It is read as "if and only if" and is true when both propositions on either side of the symbol have the same truth value (both true or both false) and false otherwise. The expression ( P↔Q ) asserts that P is true if and only if Q is true, and vice versa.
