Knowledge Representation and Reasoning
Knowledge Representation and Reasoning
Knowledge Representation and Reasoning
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Propositional logic: Syntax<br />
Propositional logic is the simplest logic—illustrates basic ideas<br />
The proposition symbols P 1 , P 2 etc are sentences<br />
♦ If S is a sentence, ¬S is a sentence (negation)<br />
♦ If S 1 , S 2 are sentences, S 1 ∧ S 2 is a sentence (conjunction)<br />
♦ If S 1 , S 2 are sentences, S 1 ∨ S 2 is a sentence (disjunction)<br />
♦ If S 1 , S 2 are sentences, S 1 → S 2 is a sentence (implication)<br />
♦ If S 1 , S 2 are sentences, S 1 ↔ S 2 is a sentence (biconditional)<br />
<strong>Knowledge</strong> <strong>Representation</strong> <strong>and</strong> <strong>Reasoning</strong> – 14
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