reserve s for set,
  i,j for Nat,
  c,c1,c2,c3 for Complex,
  F,F1,F2 for complex-valued FinSequence,
  R,R1,R2 for i-element complex-valued FinSequence;

theorem ::: generalized COMPLSP1:17
  c multcomplex is_distributive_wrt addcomplex
proof
  c in COMPLEX by XCMPLX_0:def 2;
  hence thesis by FINSEQOP:54,SEQ_4:54;
end;
