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Proof step 7 from proof map-if-at (previous step)

n < # ar ⊦ ar.mapIf(φ, f)[n] = (φ(ar[n]) ⊃ f(ar[n]);ar[n])

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: inst: name: mapif-def seq: ⊦ ar.mapIf(φ, f) = ar.mapIndices(ar.indicesWhere(φ), f) subst: [f, φ, ar] → [f, φ, ar] flags: rewrite, current

Additional information

[Concretesimprules(()), Extraterms((fφar))]