Nuprl Lemma : es-first-unique
0,22
postcript
pdf
es
:ES,
e
,
e'
:E. first(
e
)
first(
e'
)
loc(
e
) = loc(
e'
)
Id
e
=
e'
latex
Definitions
t
T
,
P
Q
,
x
:
A
.
B
(
x
)
,
e
e'
,
ES
,
E
,
first(
e
)
,
b
,
loc(
e
)
,
Id
,
s
=
t
,
Prop
,
<
a
,
b
>
Lemmas
Id
wf
,
es-loc
wf
,
assert
wf
,
es-first
wf
,
es-E
wf
,
event
system
wf
,
es-le-antisymmetric
,
es-first-le
origin
es:ES, e, e':E. first(e) 
first(e') loc(e) = loc(e') 
Id e = e' es:ES, e, e':E. first(e) first(e') loc(e) = loc(e') Id e = e' T Qx:A. B(x)
e' 
b