Nuprl Lemma : l_all_fwd
4,23
postcript
pdf
T
:Type,
P
:(
T
Prop),
L
:
T
List,
x
:
T
. (
x
L
)
(
y
L
.
P
(
y
))
P
(
x
)
latex
Definitions
P
Q
,
x
:
A
.
B
(
x
)
,
t
T
,
Prop
,
(
x
l
)
,
x
(
s
)
,
x
L
.
P
(
x
)
Lemmas
l
member
wf
origin
T:Type, P:(T
Prop), L:T List, x:T. (x 
L) 
(yL. P(y)) P(x) T:Type, P:(TProp), L:T List, x:T. (x L) (yL. P(y)) P(x) Qx:A. B(x) T l)xL. P(x)