Nuprl Lemma : es-first_wf
11,40
postcript
pdf
the_es
:event_system{i:l},
e
:es-E(
the_es
). es-first(
the_es
;
e
)
latex
Definitions
x
:
A
.
B
(
x
)
,
es-E(
es
)
,
t
T
,
es-first(
es
;
e
)
,
top
,
t
.1
,
es-pred?(
es
)
,
t
.2
,
subtype(
S
;
T
)
,
suptype(
S
;
T
)
,
event_system{i:l}
Lemmas
first
wf
,
top
wf
,
unit
wf
,
event
system
wf
origin
the_es:event_system{i:l}, e:es-E(the_es). es-first(the_es; e) 
the_es:event_system{i:l}, e:es-E(the_es). es-first(the_es; e) x:A. B(x) T