Nuprl Lemma : es-le-iff
0,22
postcript
pdf
the_es
:ES,
e
,
e'
:E.
e
e'
first(
e'
) &
e
pred(
e'
)
e
=
e'
latex
Definitions
e
e'
,
False
,
ES
,
A
,
b
,
first(
e
)
,
P
Q
,
P
Q
,
A
&
B
,
P
&
Q
,
{
T
}
,
Prop
,
E
,
pred(
e
)
,
P
Q
,
P
Q
,
(
e
<loc
e'
)
,
x
:
A
.
B
(
x
)
,
t
T
Lemmas
es-locl
wf
,
es-pred
wf
,
es-E
wf
,
es-locl-iff
,
es-first
wf
,
assert
wf
,
not
wf
,
event
system
wf
origin
the_es:ES, e, e':E. e 
e' 
first(e') & e pred(e') 
e = e' the_es:ES, e, e':E. e e' first(e') & e pred(e') e = e' e' A
b Q
Q Q Qx:A. B(x)
T