), the extended reaction centers Ψ r 0 and Ψ ′ r 0 at radius r 0 = 2 are not isomorphic. By Proposition 3 below, furthermore, it follows that the complete maps α and β are not consistent, and thus also not equivalent, which is also verified by the nonisomorphism of the ITS graphs Υ(G, H, α) and Υ(G ′ , H ′ , β). Lemma 2. Let α : V (G) → V (H) and β : V (G ′ ) → V (H ′ ) be complete AAMs for a balanced reaction G H. Then, α and β are consistent if and only if α and β are equivalent AAMs.