Nuprl Lemma : outl_wf
12,41
postcript
pdf
A
,
B
:Type,
x
:(
A
+
B
). (
isl(
x
))
(outl(
x
)
A
)
latex
ProofTree
Definitions
t
T
,
P
Q
,
x
:
A
.
B
(
x
)
,
outl(
x
)
,
if
b
then
t
else
f
fi
,
ff
,
tt
,
isl(
x
)
,
b
,
False
,
Lemmas
isl
wf
,
assert
wf
origin
A, B:Type, x:(A + B). (
isl(x)) 
(outl(x) 
A)
A, B:Type, x:(A + B). (isl(x)) (outl(x) A)
T Qx:A. B(x)b