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Proof step 5 from proof map-if-size (
previous step
)
⊦ # ar.mapIndices(ar.indicesWhere(φ), f) = # ar, valid-indices(ar, ar.indicesWhere(φ))
User applied rule insert rewrite lemma
And obtained the following new goals
Proof step 6
:
⊦ valid-indices(ar, ar.indicesWhere(φ))
Rule argument
spec: <toplevel> name: valid-indices-indiceswhere seq: ⊦ valid-indices(ar, ar.indicesWhere(φ)) subst: [φ, ar] → [φ, ar] flags: <all paths>
Additional information
Used terms: φ, ar