14459 | Reducibility: a family of functions is equivalent to a single type of function [Russell] |
18130 | Axiom of Reducibility: there is always a function of the lowest possible order in a given level [Russell, by Bostock] |
13428 | Reducibility: to every non-elementary function there is an equivalent elementary function [Ramsey] |
18170 | The Axiom of Reducibility is self-effacing: if true, it isn't needed [Quine] |
18169 | Axiom of Reducibility: propositional functions are extensionally predicative [Maddy] |
17900 | The Axiom of Reducibility made impredicative definitions possible [George/Velleman] |