Nuprl Lemma : dstype_wf
0,22
postcript
pdf
TypeNames
:Type,
d
:DS(
TypeNames
),
a
:
TypeNames
. dstype(
TypeNames
;
d
;
a
)
Type
latex
Definitions
DS(
A
)
,
dstype(
TypeNames
;
d
;
a
)
,
1of(
t
)
,
x
.
t
(
x
)
,
EqDecider(
T
)
,
x
:
A
.
B
(
x
)
,
t
T
Lemmas
deq
wf
,
pi1
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. t(x)x:A. B(x) T