Nuprl Lemma : free-from-atom-outl
11,40
postcript
pdf
A
:Type,
x
:(
A
+ Top),
a
:Atom1.
x
:
A
+ Top||
a
(
isl(
x
))
outl(
x
):
A
||
a
latex
Definitions
t
T
,
outl(
x
)
,
P
Q
,
x
:
A
.
B
(
x
)
,
,
False
,
if
b
then
t
else
f
fi
,
ff
,
tt
,
isl(
x
)
,
b
Lemmas
top
wf
,
free-from-atom
wf1
,
isl
wf
,
assert
wf
origin
A:Type, x:(A + Top), a:Atom1. x:A + Top||a 
(
isl(x)) outl(x):A||a A:Type, x:(A + Top), a:Atom1. x:A + Top||a (isl(x)) outl(x):A||a 
T Qx:A. B(x)
b