dral2

Theorem.

Arguments:

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

Hypotheses:

(()())

Assertions:

(()())

Proof:

Hyp	Ref	Line	Expr
	Hypo	1	(()())
	bv-idvar	2	( bound in ())
1, 2	bi.bldald	3	(()())