Def x:A. B(x) == x:AB(x)

is mentioned by

Thm* p:('a).  Thm* b_exists_unique('a;x.p(x)) Thm*  Thm* (x:'a. p(x)) & (x,y:'a. p(x) & p(y)  x = y)	[assert_of_b_exists_unique]
Def onto('a;'b;f) == y:'b. x:'a. y = f(x)	[onto]

In prior sections: core fun 1 hol

Try larger context: HOLlib IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html