Logic: Logical Equivalence Flashcards
1
Q
Partial conversion of A
A
I
2
Q
Partial conversion of I
A
invalid
3
Q
Partial conversion of E
A
O
4
Q
conversion of O
A
invalid
5
Q
simple conversion of A
A
A
6
Q
simple conversion of I
A
I
7
Q
simple conversion of E
A
E
8
Q
Obversion of A
A
E
9
Q
Obversion of E
A
A
10
Q
Obversion of I
A
O
11
Q
Obversion of O
A
I
12
Q
simple contra of every S is P
A
E (no non-P is S)
13
Q
obversion of “Every S is P”
A
No S is non-P
14
Q
obversion of “Some S is not P”
A
“Some S is non-P”
15
Q
simple contra of some S is P
A
invalid
