eqt>

Theorem.

Arguments:

(obj), (obj), (obj),

Assertions:

(()(()()))

Proof:

Hyp	Ref	Line	Expr
	com	1	(()())
	com	2	(()())
1, 2	bi.bldbi<>	3	((()())(()()))
	eqt<	4	(()(()()))
3, 4	brpi22	5	(()(()()))