You have chosen 'Isagoge ('Introduction')' by Porphyry, 'On Aristotle's 'Metaphysics'' by Thomas Aquinas and 'Possible Worlds and Necessary A Posteriori' by Frank Jackson
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Mathematics, or select a subheading: |
| A. | Nature of Mathematics | |
| B. | Foundations for Mathematics | |
| C. | Sources of Mathematics |