proposition: Lemma harmonic_ge0 {R : numFieldType} i : 0 <= harmonic i :> R.
proof: Proof. exact/ltW/harmonic_gt0. Qed.
imports: mathcomp(all_ssreflect ssralg ssrint ssrnum matrix) mathcomp(interval rat) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(set_interval) reals ereal signed topology normedtype landau