Intro to Philosophy Final Logic and Truth Valid argument forms

  1. All M are P.
    All S are M.
    Therefor, all S are P

    No M are P.
    All S are M
    Therefore, no S are P

    All M are P.
    Some S are M
    Therefore, some S are P.
    Categorical Syllogisms
  2. Hypothetical syllogisms: If P then Q
                                         If Q then R.
                                       Therefore, if P then R
    Pure Hypothetical Syllogism
  3. Hypothetical syllogisms: If P then Q
                                         P.
                                        Therefore, Q
    Modus Ponens
  4. Hypothetical syllogisms: If P then Q.
                                        Not-Q
                                         Therefore, not-P
    Modus Tollens
  5. Either P or Q
    Not-P
    Therefore, Q
    Disjunctive Syllogism
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Intro to Philosophy Final Logic and Truth Valid argument forms
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Intro to Philosophy Final Logic and Truth Valid argument forms
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