proposition: Lemma Rnorm0_eq0 x : Rabs x = 0 -> x = 0.
proof: Proof. by move=> H; case: (x == 0) /eqP=> // /Rabs_no_R0. Qed.
imports: Rdefinitions Raxioms RIneq Rbasic_fun Zwf Epsilon FunctionalExtensionality Ranalysis1 Rsqrt_def Rtrigo1 Reals mathcomp(all_ssreflect ssralg poly mxpoly ssrnum) HB(structures)