0 ≤ i ⊦ m ≤ i→n(i) ↔ n→i(m) ≤ i
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i ≤ j → (¬ ¬ j < i ↔ false)])], [EXTRATERMS : (j, # ints)]]