Combining Texts

All the ideas for 'Through the Looking Glass', 'On Assertion and Indicative Conditionals' and 'Foundations of Geometry'

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

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5 ideas

5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism

10053

Geometrical axioms imply the propositions, but the former may not be true [Russell]

6. Mathematics / B. Foundations for Mathematics / 3. Axioms for Geometry

10052

Geometry is united by the intuitive axioms of projective geometry [Russell, by Musgrave]

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]

10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals

14288

'If A,B' affirms that A⊃B, and also that this wouldn't change if A were certain [Jackson, by Edgington]

13769

Conditionals are truth-functional, but should only be asserted when they are confident [Jackson, by Edgington]