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All the ideas for 'Defining 'Intrinsic' (with Rae Langton)', 'works' and 'Symposium'

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10 ideas

2. Reason / D. Definition / 1. Definitions

15457

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

5. Theory of Logic / A. Overview of Logic / 2. History of Logic

11022

Gentzen introduced a natural deduction calculus (NK) in 1934 [Gentzen, by Read]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

11065

The inferential role of a logical constant constitutes its meaning [Gentzen, by Hanna]

11023

The logical connectives are 'defined' by their introduction rules [Gentzen]

11213

Each logical symbol has an 'introduction' rule to define it, and hence an 'elimination' rule [Gentzen]

6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / g. Incompleteness of Arithmetic

10067

Gentzen proved the consistency of arithmetic from assumptions beyond arithmetic [Gentzen, by Musgrave]

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]

22. Metaethics / B. Value / 2. Values / h. Fine deeds

5845	Niceratus learnt the whole of Homer by heart, as a guide to goodness [Xenophon]