Combining Philosophers

All the ideas for Vassilis Politis, Augustus De Morgan and C.J. Thomae

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8 ideas

2. Reason / D. Definition / 1. Definitions

11257

The Pythagoreans were the first to offer definitions [Politis, by Politis]

3. Truth / A. Truth Problems / 4. Uses of Truth

11235

'True of' is applicable to things, while 'true' is applicable to words [Politis]

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

17744

De Morgan started the study of relations and their properties [De Morgan, by Walicki]

13501

De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD]

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]

7. Existence / A. Nature of Existence / 3. Being / e. Being and nothing

11277

Maybe 'What is being? is confusing because we can't ask what non-being is like [Politis]

9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities

11248

Necessary truths can be two-way relational, where essential truths are one-way or intrinsic [Politis]

18. Thought / E. Abstraction / 8. Abstractionism Critique

8638	Thomae's idea of abstract from peculiarities gives a general concept, and leaves the peculiarities [Frege on Thomae]