proposition: Lemma linear_suml I r (P : pred I) E : f (\sum_(i <- r | P i) E i) z = \sum_(i <- r | P i) f (E i) z.
proof: Proof. by rewrite -applyrE raddf_sum. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg fingroup zmodp poly ssrnum) mathcomp(matrix mxalgebra vector falgebra ssrnum algC algnum) mathcomp(fieldext) mathcomp(vector)