You have chosen 'Intro to G��del's Theorems' by Peter Smith, 'Symbolic Logic (with Langford)' by C.I. Lewis and 'Metaphysical Foundations of Natural Science' by Immanuel Kant
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 |