Nuprl Lemma : strong-subtype-l_member
11,40
postcript
pdf
A
,
B
:Type. strong-subtype(
A
;
B
)
(
L
:(
A
List),
x
:
B
. (
x
L
)
(
x
L
))
latex
Definitions
x
:
A
.
B
(
x
)
,
P
Q
,
subtype(
S
;
T
)
,
t
T
,
x
:
A
.
B
(
x
)
,
A
B
,
A
,
False
,
prop{i:l}
,
(
x
l
)
,
A
c
B
,
strong-subtype(
A
;
B
)
,
Lemmas
l
member
wf
,
strong-subtype
wf
,
select
wf
,
length
wf1
origin
A,B:Type. strong-subtype(A; B) 
(L:(A List), x:B. (x 
L) (x L)) A,B:Type. strong-subtype(A; B) (L:(A List), x:B. (x L) (x L)) x:A. B(x) Q T
x:A. B(x)
B
A l)
B