Combining Texts

You have chosen 'A Résumé of Metaphysics' by Gottfried Leibniz, 'On the Syllogism IV' by Augustus De Morgan and 'Contributions to Philosophy' by Martin Heidegger

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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