Book 2 Unit 1 Flashcards
(6 cards)
0
Q
Tautology
A
A proposition that is always true due to its logical structure.
1
Q
Two propositions are logically equivalent…
A
If and only if they have identical truth values in a truth table.
2
Q
Self contradiction
A
A proposition that is false by logical structure.
3
Q
In a valid argument…
A
If the premises are true then the conclusion must be true.
4
Q
If the premises can be true and the conclusion false…
A
The argument is invalid.
5
Q
Dilemma
A
A valid argument which presents a choice between two conditionals
