trd-2

Theorem.

Arguments:

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

Hypotheses:

(())

(())

Assertions:

(()())

Proof:

Hyp	Ref	Line	Expr
	Hypo	1	(())
		2	(())
2	siman<	3	(()())
1	siman>	4	(()())
3, 4	trd	5	(()())