Nuprl Lemma : singleton_wf
2,24
postcript
pdf
T
:Type,
a
:
T
. {
a
:
T
}
Type
latex
Definitions
{
a
:
T
}
,
x
:
A
.
B
(
x
)
,
t
T
origin
T:Type, a:T. {a:T} 
Type T:Type, a:T. {a:T} Type x:A. B(x) T