∀ n0, t', t. n0 < n → (irred(t') ∧ (=> ^ n0)(t, t') → 〈RED(t; t0)〉 t0 = t'), irred(t'), (=> ^ n)(t, t') ⊦ 〈RED(t; t0)〉 t0 = t'
[[CONCRETESIMPRULES : ([CSIMPLESSPRED : <])], [EXTRATERMS : (n)]]