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Proof step 6 from proof update-index-append (previous step)

# kx1 = # ax1, # kx = # ax, ∀ kx1, ax1, ax0, ri. # kx1 = # ax1 ∧ # ax = # ax0 → ri[kx + kx1, ax0 + ax1] = ri[kx, ax0][kx1, ax1] ⊦ ri[key, adr][kx + kx1, ax + ax1] = ri[key, adr][kx, ax][kx1, ax1]

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 3 terms: kx1, ax1, ax, ri[key, adr]

Additional information

Used terms: kx1, ax1, ax, ri[key, adr]