square of opposition

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1. Aristotle’s logic is called
categorical logic.
2. what are the 4 standard form categorical claims
• All S are P
• No S are P
• Some S are P
• Some S are not P
3. All S are P letter?
A
4. No S are P letter?
E
5. Some S are P letter?
I
6. Some S are not P letter
O
7. top left, top right, bottom left, bottom right letters?
A, E, I, O
8. left side of square
Affirmitive
9. Right side of square
Negative
10. Top Side of square
Universal
11. Bottom side of square
Particular
12. purpose of the square of opposition
To find the truth values of other categorical claims!
13. Relationship between E and I
14. Relationship between A and O
15. Relationship between A and E
Contraries
16. Relationship between I and O
Subcontraries
17. Rule of contraries
The universal claims can‟t both be True
The diagonal claims have opposite Truth Value
19. Rule of subcontraries
The particular claims can‟t both be False
 Author: Morracantiger ID: 234434 Card Set: square of opposition Updated: 2013-09-12 07:53:36 Tags: Philosophy Folders: Description: week three of philosphy Show Answers: