Combining Texts

Ideas for 'Axiomatic Theories of Truth', 'Reference and Definite Descriptions' and 'Negation'

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6 ideas

4. Formal Logic / E. Nonclassical Logics / 2. Intuitionist Logic

18789

Intuitionist logic looks best as natural deduction [Mares]

18790

Intuitionism as natural deduction has no rule for negation [Mares]

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

18787

Three-valued logic is useful for a theory of presupposition [Mares]

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]