1002 Lecture Notes - Soundness, Mathematical Induction
5 Feb 2013
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Philosophy 212 (001) uw introduction to logic. By way of contrast, what is the basic strategy for proving the soundness of sd? (confine yourself to stating it in a sentence. ) 5: consider the following argument by mathematical induction: 5: all the sentences containing 0 occurrences of connectives are true on a truth value assignment, *, if and only if they are *. One of these claims is that p q * if and only if either p and q are both * or neither is. 1% by appeal to the semantic rules for msl. A b w1 t t w2 f t w3 f f: prove that { a, b} does not modally entail (a & b) , prove that { a, b} does modally entail (a & b).
