Who Cites bimplies?
bimplies	Def pq == p  q
	Thm* p,q:. pq
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:

pq

has structure:

bimplies(p; q)

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