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Proofgold Proof
pf
Apply unknownprop_a3a7565e6ec36921ef8d95ac6064e5fb0324fd3fb8dbfeef6aeadeb5800cae4a with
λ x0 x1 :
ι → ο
.
x1
0
.
Let x0 of type
ι
→
ο
be given.
Assume H0:
x0
0
.
Assume H1:
∀ x1 .
x0
x1
⟶
x0
(
ordsucc
x1
)
.
The subproof is completed by applying H0.
■