more from Oliver,A/Smiley,T

Single Idea 14241

[catalogued under 4. Formal Logic / F. Set Theory ST / 3. Types of Set / b. Empty (Null) Set]

Full Idea

The empty set is said to be useful to express non-existence, but saying 'there are no Us', or ∃xUx are no less concise, and certainly less roundabout.

Gist of Idea

We don't need the empty set to express non-existence, as there are other ways to do that


Oliver,A/Smiley,T (What are Sets and What are they For? [2006], 1.2)

Book Reference

'Metaphysics (Philosophical Perspectives 20)', ed/tr. Hawthorne,John [Blackwell 2006], p.130