Combining Philosophers

Ideas for Melvin Fitting, J Baggini / PS Fosl and Tyler Burge

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6 ideas

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL

4632	'Natural' systems of deduction are based on normal rational practice, rather than on axioms [Baggini /Fosl]

4631	In ideal circumstances, an axiom should be such that no rational agent could possibly object to its use [Baggini /Fosl]

4. Formal Logic / E. Nonclassical Logics / 8. Intensional Logic

15375

If terms change their designations in different states, they are functions from states to objects [Fitting]

15376

Intensional logic adds a second type of quantification, over intensional objects, or individual concepts [Fitting]

4. Formal Logic / E. Nonclassical Logics / 9. Awareness Logic

15378

Awareness logic adds the restriction of an awareness function to epistemic logic [Fitting]

4. Formal Logic / E. Nonclassical Logics / 10. Justification Logics

15379

Justication logics make explicit the reasons for mathematical truth in proofs [Fitting]