trd-2r

Theorem.

Arguments:

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

Hypotheses:

(())

(())

Assertions:

(()())

Proof:

Hyp	Ref	Line	Expr
	Hypo	1	(())
		2	(())
1, 2	trd-2	3	(()())
3	ancom	4	(()())