Combining Texts

All the ideas for 'History of Ancient Art', 'Realism, Mathematics and Modality' and 'Set Theory and related topics (2nd ed)'

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]

6. Mathematics / C. Sources of Mathematics / 9. Fictional Mathematics

8714	Fictionalists say 2+2=4 is true in the way that 'Oliver Twist lived in London' is true [Field,H]

21. Aesthetics / B. Nature of Art / 4. Art as Expression

8119	Art aims only at beauty, of form, of idea, and (above all) of expression [Winckelmann, by Tolstoy]