Combining Texts

All the ideas for 'Through the Looking Glass', 'The Sceptical Chemist' and 'Set Theory and related topics (2nd ed)'

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

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]
7. Existence / A. Nature of Existence / 3. Being / e. Being and nothing
21982 I only wish I had such eyes as to see Nobody! It's as much as I can do to see real people. [Carroll,L]
27. Natural Reality / G. Biology / 3. Evolution
15961 I don't see how mere moving matter can lead to the bodies of men and animals, and especially their seeds [Boyle]