Week 18 & 19 Flashcards
1
Q
Logically equivalent
A
Two proppositions are logically equivalent if and only if they have identical truth values in a truth table
2
Q
Tautology
A
A tautology is as propoosition that is always true due to its logical structure
3
Q
Self contradiction
A
A self contradiction is a propositions that is false by logical structure
4
Q
Valid
A
In a valid argument, if the premises are true, the conclusion must be true
5
Q
Invalid
A
If the premises can be true and the conclusion is false, the argument is invalid
6
Q
A
