Combining Texts

All the ideas for 'works', 'Identity over Time' and 'On boundary numbers and domains of sets'

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

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7 ideas

4. Formal Logic / E. Nonclassical Logics / 5. Relevant Logic

8720	A logic is 'relevant' if premise and conclusion are connected, and 'paraconsistent' allows contradictions [Priest,G, by Friend]

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

17832

Zermelo showed that the ZF axioms in 1930 were non-categorical [Zermelo, by Hallett,M]

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / h. Axiom of Replacement VII

13028

Replacement was added when some advanced theorems seemed to need it [Zermelo, by Maddy]

5. Theory of Logic / L. Paradox / 3. Antinomies

17626

The antinomy of endless advance and of completion is resolved in well-ordered transfinite numbers [Zermelo]

9. Objects / E. Objects over Time / 1. Objects over Time

16025

If things change they become different - but then no one thing undergoes the change! [Gallois]

9. Objects / E. Objects over Time / 4. Four-Dimensionalism

16026

4D: time is space-like; a thing is its history; past and future are real; or things extend in time [Gallois]

9. Objects / F. Identity among Objects / 6. Identity between Objects

16027

If two things are equal, each side involves a necessity, so the equality is necessary [Gallois]