reserve x,y for set,
  i for Nat;
reserve V for non empty CLSStruct,
  u,v,v1,v2,v3 for VECTOR of V,
  A for Subset of V,
  l, l1, l2 for C_Linear_Combination of A,
  x,y,y1,y2 for set,
  a,b for Complex,
  F for FinSequence of the carrier of V,
  f for Function of the carrier of V, COMPLEX;
reserve K,L,L1,L2,L3 for C_Linear_Combination of V;
reserve e,e1,e2 for Element of C_LinComb V;

theorem Th40:
  - vector(LC_CLSpace V,L) = - L
proof
  thus - vector(LC_CLSpace V,L) = (- 1r) * (vector(LC_CLSpace V,L)) by
CLVECT_1:3
    .= - L by Th39;
end;
