Combining Texts

You have chosen 'Elimination of Metaphysics by Analysis of Language' by Rudolph Carnap, 'Open Society and Its Enemies:Hegel and Marx' by Karl Popper and 'Nature and Observability of Causal Relations' by Curt Ducasse

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All the ideas for Theory of Logic, or select a subheading:
      A. Overview of Logic
      B. Logical Consequence
      C. Ontology of Logic
      D. Assumptions for Logic
      E. Structures of Logic
      F. Referring in Logic
      G. Quantification
      H. Proof Systems
      I. Semantics of Logic
      J. Model Theory in Logic
      K. Features of Logics
      L. Paradox