>2trd

Theorem.

Arguments:

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

Hypotheses:

(())

(())

(())

Assertions:

(())

Proof:

Hyp	Ref	Line	Expr
	Hypo	1	(())
		2	(())
		3	(())
1, 2	eqt<>d	4	((()()))
4	bi>	5	((()()))
3, 5	mpd	6	(())