Combining Texts

You have chosen 'Posthumous notes' by Immanuel Kant, 'Boole calculus and the Concept script' by Gottlob Frege and 'Why Propositions cannot be concrete' by Alvin Plantinga

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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