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Proof step 13 from proof solixh-ordered (previous step)

n ≤ # x, inv(ixs, n), ordered(ixs, x) ⊦ ordered(solixh(x, n, ixs), x)

User applied rule structural induction

And closed the goal!

Rule argument

term:# x - n

Additional information

[Concretesimprules((Csimpnamedseq(solixh-base,,, ⊦ n = # x → solixh(x, n, ixs) = ixs) Csimpgen(nat freely generated by 0, +1;) Csimpnamedseq(nat,,zero-02, ⊦ m ≤ n → (n - m = 0 ↔ n = m))))]