YES O(n^2) TRS: {f(g(X)) -> f(X)} Natural interpretation: Strict: {f(g(X)) -> f(X)} Weak: {} Interpretation class: deltarestricted [g](delta, X0) = + 1*X0 + 0 + 0*X0*delta + 1*delta [f](delta, X0) = + 1*X0 + 0 + 0*X0*delta + 0*delta g_tau_1(delta) = delta/(1 + 0 * delta) f_tau_1(delta) = delta/(1 + 0 * delta) Qed