Nuprl Lemma : l_all-nil
11,40
postcript
pdf
T
:Type,
P
:Top. (
x
[].
P
(
x
))
True
latex
Definitions
Top
,
t
T
,
x
:
A
B
(
x
)
,
f
(
a
)
,
x
(
s
)
,
x
L
.
P
(
x
)
,
True
,
P
Q
,
x
:
A
.
B
(
x
)
,
Type
,
#$n
,
||
as
||
,
a
<
b
,
Void
,
P
Q
,
False
,
A
,
A
B
,
i
j
,
t
...$L
,
[]
,
{
x
:
A
|
B
(
x
)}
,
,
x
:
A
B
(
x
)
,
A
c
B
,
x
:
A
.
B
(
x
)
,
(
x
l
)
,
type
List
,
,
x
.
t
(
x
)
,
P
Q
,
P
&
Q
Lemmas
l
all
wf
,
true
wf
,
l
member
wf
,
length
nil
,
top
wf
origin
T:Type, P:Top. (x
[]. P(x)) 
True T:Type, P:Top. (x[]. P(x)) True T
B(x)xL. P(x) Qx:A. B(x) Q
A
B
j 
B(x)
B
x:A. B(x) l)
x. t(x) Q