Nuprl Lemma : rel_star_weakening
11,40
postcript
pdf
T
:Type,
x
,
y
:
T
,
R
:(
T
T
prop{i:l}). (
x
=
y
)
(
x
rel_star(
T
;
R
)
y
)
latex
Definitions
tt
,
(
i
=
j
)
,
if
b
then
t
else
f
fi
,
Y
,
False
,
A
,
A
B
,
t
T
,
rel_exp(
T
;
R
;
n
)
,
,
x
:
A
.
B
(
x
)
,
rel_star(
T
;
R
)
,
x
f
y
,
P
Q
,
prop{i:l}
,
x
:
A
.
B
(
x
)
Lemmas
rel
exp
wf
,
le
wf
origin
T:Type, x,y:T, R:(T
Tprop{i:l}). (x = y) 
(x rel_star(T; R) y) T:Type, x,y:T, R:(TTprop{i:l}). (x = y) (x rel_star(T; R) y) 
j)
A
B
T
x:A. B(x) Qx:A. B(x)