Combining Philosophers

Ideas for Aristotle, Owen Flanagan and J.G. Hamann

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7 ideas

4. Formal Logic / D. Modal Logic ML / 1. Modal Logic
Modal Square 1: □P and ◊P are 'contraries' of □P and ◊P [Aristotle, by Fitting/Mendelsohn]
Modal Square 2: □P and ◊P are 'subcontraries' of □P and ◊P [Aristotle, by Fitting/Mendelsohn]
Modal Square 3: □P and ◊P are 'contradictories' of □P and ◊P [Aristotle, by Fitting/Mendelsohn]
Modal Square 4: □P and ◊P are 'contradictories' of □P and ◊P [Aristotle, by Fitting/Mendelsohn]
Modal Square 5: □P and ◊P are 'subalternatives' of □P and ◊P [Aristotle, by Fitting/Mendelsohn]
Modal Square 6: □P and ◊P are 'subalternatives' of □P and ◊P [Aristotle, by Fitting/Mendelsohn]
4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic
There are three different deductions for actual terms, necessary terms and possible terms [Aristotle]