more from William D. Hart

Single Idea 13497

[catalogued under 4. Formal Logic / F. Set Theory ST / 1. Set Theory]

Full Idea

The theory of types is a thing of the past. There is now nothing to choose between ZFC and NBG (Neumann-Bernays-Gödel). NF (Quine's) is a more specialized taste, but is a place to look if you want the universe.

Gist of Idea

Nowadays ZFC and NBG are the set theories; types are dead, and NF is only useful for the whole universe


William D. Hart (The Evolution of Logic [2010], 3)

Book Reference

Hart,W.D.: 'The Evolution of Logic' [CUP 2010], p.88