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Proofgold Proof
pf
Let x0 of type
ι
be given.
Assume H0:
SNo
x0
.
Apply exp_SNo_nat_2 with
x0
,
λ x1 x2 .
or
(
x0
=
0
)
(
SNoLt
0
x2
)
leaving 2 subgoals.
The subproof is completed by applying H0.
Apply SNo_zero_or_sqr_pos with
x0
.
The subproof is completed by applying H0.
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