Step of Proof: member-exists
11,40
postcript
pdf
Inference at
*
1
2
I
of proof for Lemma
member-exists
:
1.
T
: Type
2.
u
:
T
3.
v
:
T
List
4.
x
:
T
. (
x
[
u
/
v
])
([
u
/
v
] = [])
latex
by ((D 0)
CollapseTHEN (MaAuto
))
latex
C
1
:
C1:
5. [
u
/
v
] = []
C1:
False
C
.
Definitions
A
,
P
Q
,
,
False
,
(
x
l
)
,
a
<
b
,
x
:
A
.
B
(
x
)
,
x
:
A
B
(
x
)
,
Type
,
,
[
car
/
cdr
]
,
x
:
A
.
B
(
x
)
,
x
:
A
B
(
x
)
,
s
=
t
,
A
List
,
t
T
,
[]
,
type
List
Lemmas
not
wf
,
false
wf
origin