rp-2>d

Theorem.

Arguments:

(st), (coll), (coll), (pr),

Hypotheses:

(())

(())

Assertions:

(())

Proof:

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