Step of Proof: nat_ind
12,41
postcript
pdf
Inference at
*
1
0
I
of proof for Lemma
nat
ind
:
1.
P
:
{k}
2.
P
(0)
3.
i
:
.
P
(
i
- 1)
P
(
i
)
4.
j
:
P
(
j
)
latex
by (%S% \p.AbSetHD (get_int_arg `hn` p) p)
latex
1
:
1:
4.
j
:
1:
5.
j
0
1:
P
(
j
)
.
Definitions
,
f
(
a
)
,
s
=
t
,
n
-
m
,
P
Q
,
,
#$n
,
x
(
s
)
,
,
x
:
A
B
(
x
)
,
A
B
,
{
x
:
A
|
B
(
x
)}
,
x
:
A
.
B
(
x
)
,
i
j
,
t
T
,
Lemmas
nat
properties
origin