Suppose that W W and W are wffs in the Propositional Calculus such that the following sequent is valid W W Which one of the

Question

Suppose that W W and W are wffs in the Propositional Calculus such that the following sequent is valid W W Which one of the following sequents is valid W W W W F W W W W OW W W W O W W F W W TTT TIT

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