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Proof step 14 from proof perm-unique (previous step)

perm(ax0, ay -1l (a × d)), a × d ∈ ay, perm(ay, (a × d)' + ax0), unique_al(ax0), perm(ay -1l (a × d), ax0), unique_al(ay -1l (a × d)), a ∈ ay -1l (a × d) ⊦ a ∈ ax0, unique_al(ay)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

name: inassoc rotate: F subst: [ax, a] → [ay -1l (a × d), a]

Additional information

Used terms: ay -1l (a × d), a