prop and conditionals Flashcards
1
Q
true or false: conditional claims = causal claims
A
false
2
Q
true or false: necessary and sufficient conditions are conditional claims
A
true
3
Q
how to say “p is sufficient for q”?
A
P->Q
4
Q
how to say “p is necessary for q”?
A
Q->P
5
Q
what is the contrapositive?
A
P->Q ==> ~Q->~P
6
Q
what is the boolean definition of conditional?
A
P->Q ==> ~PvQ
7
Q
how do you prove a conditonal?
A
assume the antecedent and prove the consequent
->Intro;1-10
cite entire subproof
8
Q
how to prove X<->Y
A
<->Intro;1-3,4-6
do 2 subproofs
9
Q
A
