You have chosen 'Intro to Gödel's Theorems' by Peter Smith, 'Principles of Theoretical Logic' by Hilbert,D/Ackermann,W and 'Causality and Properties' by Sydney Shoemaker
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 |