You have chosen 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo, 'The Republic' by Plato and 'Introduction to Zermelo's 1930 paper' by Michael Hallett
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 |