anasss<
Theorem.
Arguments:
(pr),
(pr),
(pr),
(pr),
Hypotheses:
((
(
))
)
Assertions:
(((
)
)
)
Proof:
Hyp
Ref
Line
Expr
Hypo
1
((
(
))
)
1
exp32
2
(
(
(
)))
2
imp31
3
(((
)
)
)