Combining Texts

You have chosen 'A Combinatorial Theory of Possibility' by David M. Armstrong, 'The iterative conception of Set' by George Boolos and 'Lectures on Aesthetics' by Georg W.F.Hegel

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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