Nuprl Lemma : b-union_wf
11,40
postcript
pdf
A
,
B
:Type. b-union(
A
;
B
)
Type
latex
Definitions
x
.
t
(
x
)
,
b-union(
A
;
B
)
,
t
T
,
x
:
A
.
B
(
x
)
,
x
(
s
)
Lemmas
ifthenelse
wf
,
bool
wf
,
tunion
wf
origin
A,B:Type. b-union(A; B) 
Type A,B:Type. b-union(A; B) Type 
x. t(x) Tx:A. B(x)