Combining Texts
Ideas for
'Metaphysics', 'Modal Logic within Counterfactual Logic' and 'The Big Book of Concepts'
expand these ideas
|
start again
|
choose
another area for these texts
display all the ideas for this combination of texts
3 ideas
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL
562
|
Axioms are the underlying principles of everything, and who but the philosopher can assess their truth? [Aristotle]
|
573
|
The axioms of mathematics are part of philosophy [Aristotle]
|
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5
14626
|
In S5 matters of possibility and necessity are non-contingent [Williamson]
|