>2trd

Theorem.

Arguments:

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

Hypotheses:

(())

(())

(())

Assertions:

(())

Proof:

Hyp	Ref	Line	Expr
	Hypo	1	(())
		2	(())
		3	(())
2	ax-sym	4	(())
1, 3, 4	2trd	5	(())