Step of Proof: eq_atom_eq_false_elim
12,41
postcript
pdf
Inference at
*
1
0
I
of proof for Lemma
eq
atom
eq
false
elim
:
1.
x
: Atom
2.
y
: Atom
3.
x
=a
y
= ff
(
x
=
y
)
latex
by PERMUTE{1:n, 2:n, 3:n, 4:n, 2:n, 5:n, 3:n, 4:n, 6:n, 7:n, 8:n, 9:n, 10:n}
latex
1
: .....wf..... NILNIL
1:
(
x
=a
y
= ff)
2
: .....wf..... NILNIL
2:
(
(
x
=a
y
))
3
: .....wf..... NILNIL
3:
(
(
x
=
y
))
4
: .....wf..... NILNIL
4:
x
=a
y
5
: .....wf..... NILNIL
5:
(
(
x
=a
y
))
6
: .....wf..... NILNIL
6:
(
x
=a
y
)
7
: .....wf..... NILNIL
7:
(
x
=
y
)
8
: .....wf..... NILNIL
8:
x
Atom
9
: .....wf..... NILNIL
9:
y
Atom
10
:
10:
3.
(
x
=
y
)
10:
(
x
=
y
)
.
Definitions
t
T
,
x
:
A
B
(
x
)
,
P
Q
,
b
,
b
,
f
(
a
)
,
x
:
A
B
(
x
)
,
,
A
,
ff
,
x
=a
y
,
,
s
=
t
,
Atom
,
P
&
Q
,
x
:
A
.
B
(
x
)
,
P
Q
,
P
Q
Lemmas
assert
of
eq
atom
,
not
functionality
wrt
iff
,
assert
of
bnot
,
eqff
to
assert
,
iff
transitivity
origin