Nuprl Lemma : preserved_by_wf
4,23
postcript
pdf
T
:Type,
P
:(
T
Prop),
R
:(
T
T
Prop).
R
preserves
P
Prop
latex
Definitions
R
preserves
P
,
x
:
A
.
B
(
x
)
,
P
Q
,
x
f
y
,
Prop
,
t
T
origin
T:Type, P:(T
Prop), R:(TTProp). R preserves P 
Prop T:Type, P:(TProp), R:(TTProp). R preserves P Prop x:A. B(x)
Q T