CSC165H1 Lecture Notes - Lecture 4: Contraposition, Vacuous Truth, Qi
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CSC165H1 Full Course Notes
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If you push that button, the fire alarm will go off. Q = the fire alarm will go off". P implies q - q can be t or f. Whenever p is true, q must be true. Since implication is not disproven by the hypothesis not to be true. Implication is logically equal to p q or p => q. E. g. p = you are a pens fan" q = you are not a flyers fan". Suppose you are a flyers fan ( q is true) If q has not occurred, then p cannot have occurred either. P = i am in toronto, on". Q = i am in canada" p=> q q=>p is not true. If p is true, then both p=>q is true and converse is true. X is divisible by 3" - depends on the value of x.