Nuprl Lemma : no-member-sq-nil
0,22
postcript
pdf
T
:Type,
L
:
T
List. (
x
:
T
.
(
x
L
))
(
L
~ nil)
latex
Definitions
(
x
l
)
,
Prop
,
P
Q
,
P
&
Q
,
P
Q
,
P
Q
,
t
T
,
x
:
A
.
B
(
x
)
,
A
,
P
Q
,
False
Lemmas
l
member
wf
,
cons
member
,
not
wf
origin
T:Type, L:T List. (x:T. 
(x 
L)) 
(L ~ nil) T:Type, L:T List. (x:T. (x L)) (L ~ nil) l)
Q Q
Q Tx:A. B(x)A Q