Rough Explanation of Symbol︰
P∧Q︰P and Q
P→Q︰if P then Q
P≡Q︰(P→Q)∧(Q→P)P∨Q︰P or Q
¬P︰not P
Rules for Sentential Logic︰
MP (modus ponens、肯定前件) MT (modus tollens、否定後件) Conj (conjunction、連言)
| CP (conditional proof、條件證明)
IP (indirect proof、歸謬法)
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