Nuprl Lemma : fpf-join-empty-sq 0,22

A:Type, B:(AType), f:a:A fp B(a), eq:EqDecider(A).   f ~ <1of(f),a.2of(f)(a)> 
latex


DefinitionsEqDecider(T), xt(x), x(s), f(a), Type, a:A fp B(a), x:AB(x), , f  g, f(x)?z, x  dom(f), f(x), S  T, x:AB(x), x:AB(x), type List, Top, x:AB(x), t  T, Void
Lemmastop wf, filter tt, fpf wf, deq wf

origin