PHIL 1115 Lecture Notes - Lecture 7: If And Only If
3 Feb 2016
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Document Summary
When symbolizing english sentences in lsl (especially complex ones) it"s useful to perform the symbolization in at least 2 steps. 1- replace all basic sentences with atomic letters ( logish") 2- eliminate remaining english by replacing connections with lsl connectives and properly grouping the resulting symbolic expression. When 3+ lsl sentence letters appear in an lsl sentence, grouping symbols must be used to indicate the intended scope. John will study hard" (s) and also bribe the instructor" (b) and if he does both, he will get an a" (a), provided the instructor likes him" (l) 1- s and b and if s and b, then a, provided l. 2- (s & b) & (l ((s & b) a)) Sara is going" (s) unless either rachel is going" (r ) or pam is going" (p) and sara is not going if, and only if, neight pam is going" (p) no quincy is going" (q).
