Combining Texts

All the ideas for 'Laches', 'The Barcan Formula and Metaphysics' and 'Grundlagen (Foundations of Theory of Manifolds)'

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8 ideas

1. Philosophy / A. Wisdom / 3. Wisdom Deflated

291	Don't assume that wisdom is the automatic consequence of old age [Plato]

4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula

16186

The Barcan Formulas express how to combine modal operators with classical quantifiers [Simchen]

16187

The Barcan Formulas are orthodox, but clash with the attractive Actualist view [Simchen]

16190

BF implies that if W possibly had a child, then something is possibly W's child [Simchen]

4. Formal Logic / F. Set Theory ST / 1. Set Theory

15946

Cantor developed sets from a progression into infinity by addition, multiplication and exponentiation [Cantor, by Lavine]

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / e. Ordinal numbers

15911

Ordinals are generated by endless succession, followed by a limit ordinal [Cantor, by Lavine]

10. Modality / E. Possible worlds / 1. Possible Worlds / d. Possible worlds actualism

16188

Serious Actualism says there are no facts at all about something which doesn't exist [Simchen]

23. Ethics / C. Virtue Theory / 3. Virtues / d. Courage

293	Being unafraid (perhaps through ignorance) and being brave are two different things [Plato]