Single Idea 13696

[catalogued under 5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic]

Full Idea

When a variable is not combined with a quantifier (and so is 'free'), the result is, intuitively, semantically incomplete, and incapable of truth or falsity.

Gist of Idea

When a variable is 'free' of the quantifier, the result seems incapable of truth or falsity

Source

Theodore Sider (Logic for Philosophy [2010], 4.2)

Book Reference

Sider,Theodore: 'Logic for Philosophy' [OUP 2010], p.92