fact: Definition mul_rr_helper (xi yi zi : FF) := Fle2_m1 (lower xi) && Fle2_m1 (lower yi) && Fle2 (lower zi) (Fplus2 (Fplus2 (lower xi) (lower yi)) (Fmult2 (lower xi) (lower yi))) && Fle2 (Fplus2 (Fplus2 (upper xi) (upper yi)) (Fmult2 (upper xi) (upper yi))) (upper zi).
imports: Gappa_common Gappa_pred_bnd