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When are two propositional forms logically equivalent?

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When are two propositional forms logically equivalent?
in Mathematics by ♦ Diamond (44,715 points) | 61 views

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Two propositional forms \(\Phi(P, Q, R, \ldots)\) and \(\Psi(P, Q, R, \ldots)\) are said to be logically equivalent when their truth tables are identical, or when the equivalence \(\Phi(P, Q, R, \ldots) \Leftrightarrow \Psi(P, Q, R, \ldots)\) is a tautology. Such equivalence is also called a logical identity.
by ♦ Diamond (44,715 points)

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