Combining Texts

All the ideas for 'works', 'On Euclidean Geometry' and 'Physiologia'

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3 ideas

5. Theory of Logic / G. Quantification / 2. Domain of Quantification

17743

De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki]

5. Theory of Logic / K. Features of Logics / 1. Axiomatisation

16886

The truth of an axiom must be independently recognisable [Frege]

9. Objects / C. Structure of Objects / 4. Quantity of an Object

16674

The quantity is just the matter, in that it has extended parts and is diffuse [Charleton]