Combining Texts

You have chosen 'To be is to be the value of a variable..' by George Boolos, 'Art and Its Objects' by Richard Wollheim and 'Papers of 1906' by Bertrand Russell

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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