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Proof step 4 from proof rev-at (previous step)

# ar = n0 + n + 1, n < # ar ⊦ # ar = 0, rev(ar)[n] = ar[n0]

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ rev(ar) = rev(ar, # ar)
Proof step 6:
# ar = n0 + n + 1, n < # ar ⊦ # ar = 0, rev(ar, # ar)[n] = ar[n0]

Rule argument

spec: inst: name: rev seq: ⊦ rev(ar) = rev(ar, # ar) subst: [ar] → [ar] flags: rewrite, current

Additional information

Used terms: ar