Combining Texts

You have chosen 'Counterpart theory and Quant. Modal Logic' by David Lewis, 'Katzav on limitations of dispositions' by Brian Ellis and 'On the Foundations of Logic and Arithmetic' by David Hilbert

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      A. Existence of Objects
      B. Unity of Objects
      C. Structure of Objects
      D. Essence of Objects
      E. Objects over Time
      F. Identity among Objects