Nuprl Lemma : not-r-immediate-pred
11,40
postcript
pdf
es
:ES,
R
:(E
E
).
(
e
,
e'
:E. Dec(
R
(
e'
,
e
)))
R
=>
x
,
y
. (
x
<
y
)
(
e
,
e'
:E. (
e'
R
e
)
(
es-r-immediate-pred(
es
;
R
;
e'
;
e
))
(
c
:E. ((
e'
R
c
) & (
c
R
e
))))
latex
Definitions
x
:
A
.
B
(
x
)
,
E
,
(
e
<
e'
)
,
P
&
Q
,
x
f
y
,
ES
,
,
Type
,
R1
=>
R2
,
x
.
t
(
x
)
,
Dec(
P
)
,
P
Q
,
left
+
right
,
es-r-immediate-pred(
es
;
R
;
e'
;
e
)
,
R
!
,
x
:
A
.
B
(
x
)
,
A
,
False
,
P
Q
,
x
:
A
B
(
x
)
,
Void
,
x
:
A
B
(
x
)
,
f
(
a
)
,
A
c
B
,
e
<
e'
,
t
.1
,
b
,
t
T
Lemmas
es-causl
wf
,
decidable
cand
,
decidable
existse-causl
origin