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Proof step 23 from proof precedes-ascsubseq-2-h (previous step)

ascsubseq(ix0 + n0 ' + ix1 + n1 ' + ix2, x) ⊦ precedes(n0, n1, x)

User applied rule structural induction

And obtained the following new goals

Proof step 14:
ascsubseq([] + n0 ' + ix1 + n1 ' + ix2, x) ⊦ precedes(n0, n1, x)

Rule argument

indvar:ix0

Additional information

[Concretesimprules((Csimpgen(ilist freely generated by [], +;)))]