Nuprl Lemma : singleton_properties
2,24
postcript
pdf
T
:Type,
a
:
T
,
x
:{
a
:
T
}.
x
=
a
T
latex
Definitions
{
a
:
T
}
,
x
:
A
.
B
(
x
)
,
t
T
Lemmas
singleton
wf
origin
T:Type, a:T, x:{a:T}. x = a 
T T:Type, a:T, x:{a:T}. x = a T x:A. B(x) T