Combining Texts

All the ideas for 'Leibniz: Guide for the Perplexed', 'Defining 'Intrinsic' (with Rae Langton)' and 'Elements of Mathematical Logic'

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6 ideas

2. Reason / D. Definition / 1. Definitions

15457

Interdefinition is useless by itself, but if we grasp one separately, we have them both [Lewis]

4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic

8942	Lukasiewicz's L3 logic has three truth-values, T, F and I (for 'indeterminate') [Lukasiewicz, by Fisher]

8. Modes of Existence / B. Properties / 4. Intrinsic Properties

15400

We must avoid circularity between what is intrinsic and what is natural [Lewis, by Cameron]

15458

A property is 'intrinsic' iff it can never differ between duplicates [Lewis]

15459

Ellipsoidal stars seem to have an intrinsic property which depends on other objects [Lewis]

9. Objects / B. Unity of Objects / 2. Substance / d. Substance defined

19347

Substance needs independence, unity, and stability (for individuation); also it is a subject, for predicates [Perkins]