alexan<

Theorem.

Arguments:

(sv), (pr), (pr),

Assertions:

(()())

Proof:

Hyp	Ref	Line	Expr
	alexan>	1	(()())
	ancom	2	(()())
	ancom	3	(()())
3	eqt-∃-i	4	(()())
1, 2, 4	<imtr	5	(()())