Nuprl Lemma : select_equal
4,23
postcript
pdf
T
:Type,
a
,
b
:
T
List,
i
:
.
a
=
b
i
<||
a
||
a
[
i
] =
b
[
i
]
T
latex
Definitions
t
T
,
,
Prop
,
x
:
A
.
B
(
x
)
,
||
as
||
,
P
Q
,
False
,
A
,
A
B
,
l
[
i
]
Lemmas
select
wf
,
length
wf1
,
nat
wf
origin
T:Type, a, b:T List, i:
. a = b 
i<||a|| a[i] = b[i] 
T T:Type, a, b:T List, i:. a = b i<||a|| a[i] = b[i] T Tx:A. B(x) Q
A
B