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Proof step 1 from proof remove-wbufs-at (conclusion)

m < # lpt ⊦ remove-wbufs(ns, lpt)[m] = (m ∈ ns ⊃ lpt[m].size:= LEB_SIZE;lpt[m])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
m < # lpt ⊦ lpt.mapIndices(ns, λ lp. lp.size:= LEB_SIZE)[m] = (m ∈ ns ⊃ lpt[m].size:= LEB_SIZE;lpt[m])

Rule argument

Additional information

Used simplifier rules: remove-wbufs: ⊦ remove-wbufs(ns, lpt) = lpt.mapIndices(ns, λ lp. lp.size:= LEB_SIZE);% ⊦ m < n → n ≠ 0; (s)%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic