Nuprl Lemma : non_neg_length
11,40
postcript
pdf
A
:Type,
l
:(
A
List). ge(||
l
||; 0)
latex
Definitions
t
T
,
x
:
A
.
B
(
x
)
,
False
,
P
Q
,
A
,
A
B
,
Y
,
||
as
||
,
ge(
i
;
j
)
Lemmas
length
wf1
origin
A:Type, l:(A List). ge(||l||; 0) A:Type, l:(A List). ge(||l||; 0) 
Tx:A. B(x)
Q
A
B