Combining Texts

All the ideas for 'works', 'Set Theory and related topics (2nd ed)' and 'Ethics of Ambiguity'

expand these ideas     |    start again     |     specify just one area for these texts

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3 ideas

4. Formal Logic / F. Set Theory ST / 3. Types of Set / e. Equivalence classes

8920	Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz]

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]

23. Ethics / F. Existentialism / 3. Angst

20761

If existence is absurd it can never have a meaning [Beauvoir]