Combining Texts

All the ideas for 'The Structure of Science', 'Structure and Ontology' and 'Model Theory for Modal Logic I'

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3 ideas

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5

9560	S5 provides the correct logic for necessity in the broadly logical sense [Fine,K]

7. Existence / C. Structure of Existence / 2. Reduction

3425	Reduction has been defined as deriving one theory from another by logic and maths [Nagel,E, by Kim]

18. Thought / E. Abstraction / 3. Abstracta by Ignoring

9626	A structure is an abstraction, focussing on relationships, and ignoring other features [Shapiro]