Combining Texts

You have chosen 'Set Theory' by Kenneth Kunen, 'Sources of Knowledge of Mathematics' by Gottlob Frege and 'Action' by Wilson,G/Schpall,S

start again     |    choose another area for these texts     |    all the ideas for this combination of texts
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