Step of Proof: multiply_nat_wf
12,41
postcript
pdf
Inference at
*
2
0
1
1
1
I
of proof for Lemma
multiply
nat
wf
:
1.
i
:
2.
j
:
3.
j
< 0
4. ((
j
+1)
0 )
(0
(
i
* (
j
+1)))
5.
j
0
0
(
i
*
j
)
latex
by Arith
latex
1
: .....wf..... NILNIL
1:
(
i
*
j
)
2
: .....wf..... NILNIL
2:
0
.
Definitions
s
=
t
,
n
+
m
,
#$n
,
,
,
x
:
A
B
(
x
)
,
Void
,
a
<
b
,
n
*
m
,
t
T
,
False
,
P
Q
,
A
,
A
B
,
i
j
origin