Combining Texts

You have chosen 'The Elm and the Expert' by Jerry A. Fodor, 'On the General Idea of Proof Theory' by Dag Prawitz and 'On the Principles of Indiscernibles' by Gottfried Leibniz

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All the ideas for Formal Logic, or select a subheading:
      A. Syllogistic Logic
      B. Propositional Logic PL
      C. Predicate Calculus PC
      D. Modal Logic ML
      E. Nonclassical Logics
      F. Set Theory ST
      G. Formal Mereology