more from Edwin D. Mares

Single Idea 18787

[catalogued under 4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic]

Full Idea

One reason for wanting a three-valued logic is to act as a basis of a theory of presupposition.

Gist of Idea

Three-valued logic is useful for a theory of presupposition


Edwin D. Mares (Negation [2014], 3.1)

Book Reference

'Bloomsbury Companion to Philosophical Logic', ed/tr. Horsten,L/Pettigrew,R [Bloomsbury 2014], p.185

A Reaction

[He cites Strawson 1950] The point is that you can get a result when the presupposition does not apply, as in talk of the 'present King of France'.