Combining Texts

All the ideas for 'The Barcan Formula and Metaphysics', 'Paradoxes of the Infinite' and 'Letters to Fichte'

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8 ideas

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

9987	An aggregate in which order does not matter I call a 'set' [Bolzano]

6. Mathematics / A. Nature of Mathematics / 5. The Infinite / a. The Infinite

10856

A truly infinite quantity does not need to be a variable [Bolzano]

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 / g. Contemplation

7071	Life and rationality are pointless if we can only contemplate the freedom of our own ego [Jacobi]

23. Ethics / F. Existentialism / 2. Nihilism

7072	Jacobi was the first philosopher to talk of nihilism [Jacobi, by Critchley]