bi.bldan>

Theorem.

Arguments:

(pr), (pr), (pr),

Hypotheses:

()

Assertions:

(()())

Proof:

Hyp	Ref	Line	Expr
	Hypo	1	()
1	bi>	2	()
2	im.bldan>	3	(()())
1	bi<	4	()
4	im.bldan>	5	(()())
3, 5	>bii	6	(()())