fact: Fixpoint inj2 {n} (p : pos n) : pos (n * 4).
imports: Arith ZArith Lia List Undecidability.Shared.Libs.DLW.Utils(utils_tac utils_list gcd prime php utils_nat) Undecidability.Shared.Libs.DLW.Vec(pos vec) Undecidability.H10.ArithLibs(Zp lagrange) Undecidability.H10.Dio(dio_logic dio_single) Undecidability.H10(H10 H10_undec) Undecidability.H10(H10Z) Undecidability.H10.ArithLibs(Zp lagrange) Undecidability.Synthetic.Definitions