Nuprl Lemma : existse-at_wf
0,22
postcript
pdf
es
:ES,
i
:Id,
P
:({
e
:E| loc(
e
) =
i
}
Prop).
e
@
i
.
P
(
e
)
Prop
latex
Definitions
e
@
i
.
P
(
e
)
,
P
&
Q
,
x
:
A
.
B
(
x
)
,
A
&
B
,
x
(
s
)
,
E
,
loc(
e
)
,
x
:
A
.
B
(
x
)
,
Prop
,
Id
,
t
T
,
ES
Lemmas
event
system
wf
,
Id
wf
,
es-loc
wf
,
es-E
wf
origin
es:ES, i:Id, P:({e:E| loc(e) = i }
Prop). 
e@i.P(e) 
Prop es:ES, i:Id, P:({e:E| loc(e) = i }Prop). e@i.P(e) Prop e@i.P(e)x:A. B(x)x:A. B(x) T