fact: Definition F1 : Fchain := fun A k (x:A) => k x.
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)