Nuprl Lemma : once-p_wf
11,40
postcript
pdf
i
,
a
:Id,
es
:event_system{i:l}. @
i
locl(
a
) occurs once
prop{i:l}
latex
Definitions
Id
,
t
T
,
event_system{i:l}
,
x
:
A
.
B
(
x
)
,
loc(
e
)
,
s
=
t
,
es-E(
es
)
,
{
x
:
A
|
B
(
x
)}
,
x
:
A
B
(
x
)
,
prop{i:l}
,
es-kind(
es
;
e
)
,
Knd
,
P
Q
,
locl(
a
)
,
x
.
t
(
x
)
,
alle-at(
es
;
i
;
e
.
P
(
e
))
,
e
@
i
.
P
(
e
)
,
x
:
A
B
(
x
)
,
P
Q
,
@
i
locl(
a
) occurs once
Lemmas
existse-at
wf
,
alle-at
wf
,
locl
wf
,
Knd
wf
,
es-kind
wf
,
es-E
wf
,
es-loc
wf
,
event
system
wf
,
Id
wf
origin
i,a:Id, es:event_system{i:l}. @i locl(a) occurs once 
prop{i:l} i,a:Id, es:event_system{i:l}. @i locl(a) occurs once prop{i:l} Tx:A. B(x)
B(x)
Q
x. t(x)
e@i.P(e)
B(x)
Q