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Proof step 8 from proof remove-wbufs-rec (previous step)

n0 < # lpt ⊦ (n0 ∈ ns ++ n ∧ n0 < # lpt ⊃ lpt[n0].size:= LEB_SIZE;lpt[n0]) = lpt.mapIndices(ns, λ lp. lp.size:= LEB_SIZE)[n, lpt.mapIndices(ns, λ lp. lp.size:= LEB_SIZE)[n].size:= LEB_SIZE][n0], n ∈ ns

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
n0 < # lpt ⊦ (n0 = n ∨ n0 ∈ ns ⊃ lpt[n0].size:= LEB_SIZE;lpt[n0]) = lpt.mapIndices(ns, λ lp. lp.size:= LEB_SIZE)[n, lpt.mapIndices(ns, λ lp. lp.size:= LEB_SIZE)[n].size:= LEB_SIZE][n0], n ∈ ns

Rule argument

Additional information

Used simplifier rules: ⊦ n ∈ ns ++ n0 ↔ n = n0 ∨ n ∈ ns; (s)