Who Cites one one corr?
one_one_corr	Def A ~~ B == f:(AB), g:(BA). InvFuns(A; B; f; g)
	Thm* A,B:Type. (A ~~ B)  Prop
inv_funs	Def InvFuns(A; B; f; g) == g o f = Id & f o g = Id
	Thm* A,B:Type, f:(AB), g:(BA). InvFuns(A; B; f; g)  Prop
tidentity	Def Id == Id
	Thm* A:Type. Id  AA
compose	Def (f o g)(x) == f(g(x))
	Thm* A,B,C:Type, f:(BC), g:(AB). f o g  AC
identity	Def Id(x) == x
	Thm* A:Type. Id  AA

Syntax:

A ~~ B

has structure:

one_one_corr(A; B)

About: IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html