square of opposition

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Author:
Morracantiger
ID:
234434
Filename:
square of opposition
Updated:
2013-09-12 03:53:36
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Philosophy
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Description:
week three of philosphy
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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
    Contradictories
  14. Relationship between A and O
    Contradictories
  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
  18. Rule of contradictories
    The diagonal claims have opposite Truth Value
  19. Rule of subcontraries
    The particular claims can‟t both be False

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