You have chosen 'The Logic of Infinity' by Henri Poincaré, 'Principles of Theoretical Logic' by Hilbert,D/Ackermann,W and ''Ostrich Nominalism' or 'Mirage Realism'?' by Michael Devitt
start again | choose another area for these texts | all the ideas for this combination of textsAll the ideas for Modality, or select a subheading: |
A. | Necessity | |
B. | Possibility | |
C. | Sources of Modality | |
D. | Knowledge of Modality | |
E. | Possible worlds |