Hartry Field

…proposed by the American philosopher Hartry Field. It was then developed in a somewhat different way by Balaguer, the American philosopher Gideon Rosen, and the Canadian philosopher Stephen Yablo.

…radical course, the American philosopher Hartry Field has argued that nominalists can accept mathematical theories under certain conditions while denying that they are true. They can be accepted provided that they are conservative—i.e., provided that their conjunction with nonmathematical (scientific and especially physical) theories entails no claims about nonmathematical entities…