jca

Theorem.

Arguments:

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

Hypotheses:

()

()

Assertions:

(())

Proof:

Hyp	Ref	Line	Expr
	Hypo	1	()
		2	()
1, 2	jc-pre	3	(())
	df-an	4	(()())
3, 4	brpi22<	5	(())