Combining Texts

All the ideas for 'Commentary on 'Posterior Analytics'', 'The Identity of Indiscernibles' and 'The Concept of Logical Consequence'

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

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7 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / j. Axiom of Choice IX

10196

The Axiom of Choice needs a criterion of choice [Black]

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

14180

Etchemendy says fix the situation and vary the interpretation, or fix interpretations with varying situations [Etchemendy, by Read]

14181

Validity is where either the situation or the interpretation blocks true premises and false conclusion [Etchemendy, by Read]

9. Objects / A. Existence of Objects / 5. Individuation / b. Individuation by properties

10194

Two things can only be distinguished by a distinct property or a distinct relation [Black]

9. Objects / B. Unity of Objects / 2. Substance / b. Need for substance

16629

By comparing qualities and features, reason can gradually infer the nature of substance [Grosseteste]

9. Objects / F. Identity among Objects / 5. Self-Identity

10193

The 'property' of self-identity is uselessly tautological [Black]

9. Objects / F. Identity among Objects / 7. Indiscernible Objects

10195

If the universe just held two indiscernibles spheres, that refutes the Identity of Indiscernibles [Black]