more from Theodore Sider

Single Idea 13695

[catalogued under 7. Existence / D. Theories of Reality / 9. Vagueness / e. Supervaluation for vagueness]

Full Idea

Supervaluation preserves classical logic (even though supervaluations are three-valued), except when we add the Δ operator (meaning 'definitely' or 'determinately').

Clarification

See Idea 13694 for supervaluation

Gist of Idea

Supervaluational logic is classical, except when it adds the 'Definitely' operator

Source

Theodore Sider (Logic for Philosophy [2010], 3.4.5)

Book Reference

Sider,Theodore: 'Logic for Philosophy' [OUP 2010], p.85


Related Idea

Idea 13694 We can 'sharpen' vague terms, and then define truth as true-on-all-sharpenings [Sider]