proposition: Lemma alpha2_small : ((α_[2] 0 = 2) * (α_[2] 1 = 2) * (α_[2] 2 = 4) * (α_[2] 3 = 6) * ( α_[2] 4 = 6) * (α_[2] 5 = 8))%type.
proof: Proof. by rewrite /alphaL /delta !S2_small; compute. Qed.
imports: mathcomp(all_ssreflect finmap) hanoi(extra)