Combining Texts

You have chosen 'The Science of Knowing (Wissenschaftslehre) [1st ed]' by Johann Fichte, 'The Thought: a Logical Enquiry' by Gottlob Frege and 'Principia Mathematica' by Isaac Newton

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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