Nuprl Lemma : fpf-single-sub-reflexive
0,22
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A
:Type,
B
:(
A
Type),
x
:
A
,
v
:
B
(
x
),
eqa
:EqDecider(
A
).
x
:
v
x
:
v
latex
Definitions
t
T
,
x
:
A
.
B
(
x
)
,
x
.
t
(
x
)
,
x
(
s
)
,
x
:
v
,
P
Q
,
EqDecider(
T
)
,
f
g
Lemmas
deq
wf
,
fpf-sub
weakening
,
fpf-single
wf
origin
A:Type, B:(A
Type), x:A, v:B(x), eqa:EqDecider(A). x : v 
x : v A:Type, B:(AType), x:A, v:B(x), eqa:EqDecider(A). x : v x : v 
Tx:A. B(x)
x. t(x)
Q g