Combining Texts

Ideas for 'Axiomatic Theories of Truth', 'Essays on Intellectual Powers 6: Judgement' and 'works'

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5 ideas

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

16335

In Strong Kleene logic a disjunction just needs one disjunct to be true [Halbach]

16334

In Weak Kleene logic there are 'gaps', neither true nor false if one component lacks a truth value [Halbach]

4. Formal Logic / F. Set Theory ST / 1. Set Theory

16309

Every attempt at formal rigour uses some set theory [Halbach]

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

9565	Zermelo made 'set' and 'member' undefined axioms [Zermelo, by Chihara]

3339	For Zermelo's set theory the empty set is zero and the successor of each number is its unit set [Zermelo, by Blackburn]