Combining Philosophers
Ideas for Rescher,N/Oppenheim,P, Plutarch and Aristotle
expand these ideas
|
start again
|
choose
another area for these philosophers
display all the ideas for this combination of philosophers
7 ideas
4. Formal Logic / D. Modal Logic ML / 1. Modal Logic
|
9728
|
Modal Square 1: □P and ¬◊¬P are 'contraries' of □¬P and ¬◊P [Aristotle, by Fitting/Mendelsohn]
|
|
9729
|
Modal Square 2: ¬□¬P and ◊P are 'subcontraries' of ¬□P and ◊¬P [Aristotle, by Fitting/Mendelsohn]
|
|
9730
|
Modal Square 3: □P and ¬◊¬P are 'contradictories' of ¬□P and ◊¬P [Aristotle, by Fitting/Mendelsohn]
|
|
9731
|
Modal Square 4: □¬P and ¬◊P are 'contradictories' of ¬□¬P and ◊P [Aristotle, by Fitting/Mendelsohn]
|
|
9732
|
Modal Square 5: □P and ¬◊¬P are 'subalternatives' of ¬□¬P and ◊P [Aristotle, by Fitting/Mendelsohn]
|
|
9733
|
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
|
9403
|
There are three different deductions for actual terms, necessary terms and possible terms [Aristotle]
|