How can we help?

You can also find more resources in our Help Center.

10 terms

Chapter 6 - propositional logic - argument forms, fallacies and equivalencies

STUDY
PLAY
valid form: disjunctive syllogism
p∨q / ~p // q
valid form: pure hypothetical syllogism
p⊃q / q⊃r // p⊃r
valid form: modus ponens
p⊃q / p // q
valid form: modus tollens
p⊃ q / ~q // ~p
valid form: constructive dilemma
(p⊃q) · (r⊃s) / p∨r // q∨s
valid form: destructive dilemma
(p⊃q) · (r ⊃s) / ~q∨~s // ~p∨~r
invalid form/fallacy: affirming the consequent
p⊃q / q // p
invalid form/fallacy: denying the antecedent
p⊃q / ~p // ~q
logical equivalency 1: double negative
p = ~~p
logical equivalency 2: wedge flipping
p∨q = q∨p