Nuprl Lemma : priority-select_wf
0,22
postcript
pdf
T
:Type,
as
:
T
List,
f
,
g
:(
T
). priority-select(
f
;
g
;
as
)
+Unit
latex
Definitions
t
T
,
,
Unit
,
false
,
x
:
A
.
B
(
x
)
,
if
b
t
else
f
fi
,
true
,
isl(
x
)
,
,
x
,
y
.
t
(
x
;
y
)
,
list_accum(
x
,
a
.
f
(
x
;
a
);
y
;
l
)
,
priority-select(
f
;
g
;
as
)
Lemmas
list
accum
wf
,
it
wf
,
isl
wf
,
btrue
wf
,
ifthenelse
wf
,
bfalse
wf
,
unit
wf
,
bool
wf
origin
T:Type, as:T List, f, g:(T
). priority-select(f;g;as) 
+Unit T:Type, as:T List, f, g:(T). priority-select(f;g;as) +Unit T
x:A. B(x)
t else f fi
x,y. t(x;y)