Combining Texts

All the ideas for 'Symbolic Reasoning', 'Letter to Frege 29.12.1899' and 'The Intentionality of Sensation'

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

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3 ideas

3. Truth / G. Axiomatic Truth / 1. Axiomatic Truth

15716

If axioms and their implications have no contradictions, they pass my criterion of truth and existence [Hilbert]

4. Formal Logic / F. Set Theory ST / 3. Types of Set / b. Empty (Null) Set

21548

The null class is the class with all the non-existents as its members [MacColl, by Lackey]

15. Nature of Minds / B. Features of Minds / 5. Qualia / b. Qualia and intentionality

7439	The qualities involved in sensations are entirely intentional [Anscombe, by Armstrong]