praeclarum

Theorem.

Arguments:

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

Assertions:

((()())(()()))

Proof:

Hyp	Ref	Line	Expr
	>and	1	((()))
1	syl<	2	((()(())))
2	syl<	3	(()((()(()))))
3	com23i	4	(()(()((()))))
4	imp4b	5	((()())(()()))