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Proofgold Proof
pf
Let x0 of type
ι
be given.
Assume H0:
SNo
x0
.
Apply SNo_pair_0 with
x0
,
λ x1 x2 .
CSNo_Im
x1
=
0
.
Apply CSNo_Im2 with
x0
,
0
leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying SNo_0.
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