Combining Philosophers

Ideas for Rescher,N/Oppenheim,P, Joseph Melia and Pherecydes

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2 ideas

4. Formal Logic / C. Predicate Calculus PC / 1. Predicate Calculus PC

5737	Predicate logic has connectives, quantifiers, variables, predicates, equality, names and brackets [Melia]

4. Formal Logic / D. Modal Logic ML / 1. Modal Logic

5744	First-order predicate calculus is extensional logic, but quantified modal logic is intensional (hence dubious) [Melia]