You have chosen 'Essence and Potentiality' by Barbara Vetter, 'Elucidation of some points in E.Schrder' by Gottlob Frege and 'Elements of Set Theory' by Herbert B. Enderton
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Existence, or select a subheading: |
| A. | Nature of Existence | |
| B. | Change in Existence | |
| C. | Structure of Existence | |
| D. | Theories of Reality | |
| E. | Categories |