fact: Definition FFK (fp fq : Fchain) : Kchain := fun A k a => fp A (fun xb => fq A (fun y => k y xb) xb) a.
imports: Coq(Inverse_Image Inclusion Wf_nat NArith Arith PArith Recdef Wf_nat Lexicographic_Product Lia) additions(Addition_Chains Compatibility More_on_positive Wf_transparent Dichotomy BinaryStrat) Coq(Lia)