Nuprl Lemma : dstype_wf
11,40
postcript
pdf
TypeNames
:Type,
d
:DS(
TypeNames
),
a
:
TypeNames
. dstype(
TypeNames
;
d
;
a
)
Type
latex
Definitions
x
:
A
.
B
(
x
)
,
DS(
A
)
,
t
T
,
dstype(
TypeNames
;
d
;
a
)
,
x
.
t
(
x
)
,
x
(
s
)
Lemmas
pi1
wf
,
deq
wf
origin
TypeNames:Type, d:DS(TypeNames), a:TypeNames. dstype(TypeNames; d; a) 
Type TypeNames:Type, d:DS(TypeNames), a:TypeNames. dstype(TypeNames; d; a) Type x:A. B(x) T
x. t(x)