Step of Proof: absval_elim
12,41
postcript
pdf
Inference at
*
I
of proof for Lemma
absval
elim
:
P
:(
). (
x
:
.
P
(|
x
|))
(
x
:
.
P
(
x
))
latex
by ((((Unfolds ``guard so_apply`` 0)
CollapseTHEN (GenUnivCD))
)
CollapseTHENA (
C
(Auto_aux (first_nat 1:n) ((first_nat 1:n),(first_nat 3:n)) (first_tok :t) inil_term)))
latex
C
1
:
C1:
1.
P
:
C1:
2.
x
:
.
P
(|
x
|)
C1:
3.
x
:
C1:
P
(
x
)
C
2
:
C2:
1.
P
:
C2:
2.
x
:
.
P
(
x
)
C2:
3.
x
:
C2:
P
(|
x
|)
C
.
Definitions
t
T
,
P
Q
,
P
Q
,
P
&
Q
,
x
(
s
)
,
P
Q
,
,
x
:
A
.
B
(
x
)
,
Lemmas
absval
wf
,
nat
wf
origin