Combining Texts

You have chosen 'Why coherence is not enough' by James Van Cleve, 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo and 'On the General Idea of Proof Theory' by Dag Prawitz

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All the ideas for Objects, or select a subheading:
      A. Existence of Objects
      B. Unity of Objects
      C. Structure of Objects
      D. Essence of Objects
      E. Objects over Time
      F. Identity among Objects