proposition: Fact LtoC_K z Az : CtoL (@LtoC z Az) = z.
proof: Proof. exact: (svalP (LtoC_subproof Az)). Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun ssrnat eqtype seq choice) mathcomp(div fintype path bigop finset prime order ssralg) mathcomp(poly polydiv mxpoly generic_quotient countalg) mathcomp(ssrnum closed_field ssrint archimedean rat intdiv) mathcomp(algebraics_fundamentals)