eqt<

Theorem.

Arguments:

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

Assertions:

(()(()()))

Proof:

Hyp	Ref	Line	Expr
	ax-tr	1	(()(()()))
	ax-tr	2	(()(()()))
1, 2	im.bldan<>	3	((()())((()())(()())))
	df-equ	4	(()(()()))
	dfbi	5	((()())((()())(()())))
3, 4, 5	<imtr	6	(()(()()))
6	eqsym	7	(()(()()))