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Proofgold Proof
pf
Let x0 of type
ι
be given.
Let x1 of type
ι
be given.
Let x2 of type
ι
be given.
Let x3 of type
ι
be given.
Assume H0:
02b90..
x0
x1
.
Assume H1:
02b90..
x2
x3
.
Claim L2:
...
...
Claim L3:
...
...
Claim L4:
...
...
Apply H0 with
02b90..
(
0ac37..
(
94f9e..
x0
(
λ x4 .
bc82c..
x4
(
02a50..
x2
x3
)
)
)
(
94f9e..
x2
(
λ x4 .
bc82c..
(
02a50..
x0
x1
)
x4
)
)
)
(
0ac37..
(
94f9e..
x1
(
λ x4 .
bc82c..
x4
(
02a50..
x2
x3
)
)
)
(
94f9e..
x3
(
λ x4 .
bc82c..
(
02a50..
x0
x1
)
x4
)
)
)
.
Assume H5:
and
(
∀ x4 .
prim1
x4
x0
⟶
80242..
x4
)
(
∀ x4 .
prim1
x4
x1
⟶
80242..
x4
)
.
Apply H5 with
(
∀ x4 .
prim1
x4
x0
⟶
∀ x5 .
prim1
x5
x1
⟶
099f3..
x4
x5
)
⟶
02b90..
(
0ac37..
(
94f9e..
x0
(
λ x4 .
bc82c..
x4
(
02a50..
x2
x3
)
)
)
(
94f9e..
x2
(
λ x4 .
bc82c..
(
02a50..
x0
x1
)
x4
)
)
)
(
0ac37..
(
94f9e..
x1
(
λ x4 .
bc82c..
x4
(
02a50..
x2
x3
)
)
)
(
94f9e..
x3
(
λ x4 .
bc82c..
(
02a50..
x0
x1
)
x4
)
)
)
.
Assume H6:
∀ x4 .
prim1
x4
x0
⟶
80242..
x4
.
Assume H7:
∀ x4 .
prim1
x4
x1
⟶
80242..
x4
.
Assume H8:
∀ x4 .
prim1
x4
x0
⟶
∀ x5 .
prim1
x5
x1
⟶
099f3..
x4
x5
.
Apply H1 with
02b90..
(
0ac37..
(
94f9e..
x0
(
λ x4 .
bc82c..
x4
(
02a50..
x2
x3
)
)
)
(
94f9e..
x2
(
λ x4 .
bc82c..
(
02a50..
x0
x1
)
x4
)
)
)
(
0ac37..
(
94f9e..
x1
(
λ x4 .
bc82c..
x4
(
02a50..
x2
x3
)
)
)
(
94f9e..
x3
(
λ x4 .
bc82c..
(
02a50..
x0
x1
)
x4
)
)
)
.
Assume H9:
and
(
∀ x4 .
prim1
x4
x2
⟶
80242..
x4
)
(
∀ x4 .
prim1
x4
x3
⟶
80242..
x4
)
.
Apply H9 with
(
∀ x4 .
prim1
x4
x2
⟶
∀ x5 .
prim1
x5
x3
⟶
099f3..
x4
x5
)
⟶
02b90..
(
0ac37..
(
94f9e..
x0
(
λ x4 .
bc82c..
x4
(
02a50..
x2
x3
)
)
)
(
94f9e..
x2
(
λ x4 .
bc82c..
(
02a50..
x0
x1
)
x4
)
)
)
(
0ac37..
(
94f9e..
x1
(
λ x4 .
bc82c..
x4
(
02a50..
x2
x3
)
)
)
(
94f9e..
x3
(
λ x4 .
bc82c..
(
02a50..
x0
x1
)
x4
)
)
)
.
Assume H10:
∀ x4 .
prim1
x4
x2
⟶
80242..
x4
.
Assume H11:
∀ x4 .
prim1
x4
x3
⟶
80242..
x4
.
Assume H12:
∀ x4 .
prim1
x4
x2
⟶
∀ x5 .
prim1
x5
x3
⟶
099f3..
x4
x5
.
Apply and3I with
∀ x4 .
...
⟶
80242..
x4
,
...
,
...
leaving 3 subgoals.
...
...
...
■