You have chosen 'Frege's Theory of Numbers' by Charles Parsons, 'A General Principle to Explain Laws of Nature' by Gottfried Leibniz and 'Letters to Regius' by Ren Descartes
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Formal Logic, or select a subheading: |
| A. | Syllogistic Logic | |
| B. | Propositional Logic PL | |
| C. | Predicate Calculus PC | |
| D. | Modal Logic ML | |
| E. | Nonclassical Logics | |
| F. | Set Theory ST | |
| G. | Formal Mereology |