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Proof step 31 from proof nextl-lemma-butlast (previous step)

lfgen(n0)(0) = a ', lfgen(n1)(0) = a ', lfgen(0)(0) = a ', lfgen(n1)(m0) = lfgen(n0)(m0), lfgen(n1)(m0 + 1) = nextl(m0, lfgen(n0)(m0).last), m0 < n1, m0 < n0, n1 ≤ n0, ∀ m. m < n0 → lfgen(n0)(m + 1) = nextl(m, lfgen(n0)(m).last) ⊦ lfgen(n1)(m0 + 1) = lfgen(n0)(m0 + 1)

User applied rule all left

And closed the goal!

Rule argument

pos: left 9 terms: m0 abort: F discard: T computed: T

Additional information

Used terms: m0