Lecture #8

Lecture #8 - 6 M → P ∨ → M P M P V P M T T T T T T T...

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Philosophy 12A Lecture #8 2/11/10 Chapter 3: Truth Functional Semantics for LSL The semantics of LSL is truth-functional – the truth value of a compound statement is a function of the truth values of its parts Semantics of LSL: Truth functions II We begin with negations, which have the simplest truth functions. The truth table for negation is as follows. False antecedent always indicates that conditional is true; consequent doesn’t matter Whenever consequent is true, conditional is true Both biconditional truth values are the same, then it’s true…but if different, they’re false Double turn stile relationship is central to the course

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Unformatted text preview: 6. ( M → ) P ∨ ( → ) M P ( M ) P V ( P ) M T T T T T T T T T T F T F F F F T T F T F T T T T F F F F F T F T F T F Contingent 1. N → → N N ( N ) N T T T T T T F F T F T F Tautologous 2. G → → G ( G ) G G T T T T T T F F T F F F Tautologous 3. S → R & & ∼ R S ( S ) R & ( S & ~ ) R T T T T T F T F F T F F F T F F F F F T T T F F T F T F F F T F F F F T Contradictory 4. (( E → F → → E F (( E ) F ) F E T T T T T T T T Philosophy 12A Lecture #8 2/11/10 T F T T F T F T F T F F T T T F F F F T F T F F...
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This note was uploaded on 04/20/2010 for the course PHIL 63170 taught by Professor Fitelson during the Spring '10 term at Berkeley.

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Lecture #8 - 6 M → P ∨ → M P M P V P M T T T T T T T...

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