You have chosen 'Abstract Objects' by Gideon Rosen, 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo and 'Tonk, Plonk and Plink' by Nuel D. Belnap
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Modality, or select a subheading: |
| A. | Necessity | |
| B. | Possibility | |
| C. | Sources of Modality | |
| D. | Knowledge of Modality | |
| E. | Possible worlds |