Who Cites himplies?
himplies	Def implies == p:. q:. pq
	Thm* implies  (hbool  hbool  hbool)
bimplies	Def pq == p  q
	Thm* p,q:. pq
bool	Def  == Unit+Unit
	Thm*   Type
	Thm*   S
tlambda	Def (x:T. b(x))(x) == b(x)
bnot	Def b == if b false else true fi
	Thm* b:. b
bor	Def p  q == if p true else q fi
	Thm* p,q:. (p  q)
btrue	Def true == inl()
	Thm* true
bfalse	Def false == inr()
	Thm* false
ifthenelse	Def if b t else f fi == InjCase(b ; t; f)
	Thm* b:, A:Type, p,q:A. if b p else q fi  A

Syntax:

implies

has structure:

himplies

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