Аннотация:We consider the semilinear parabolic equation of normal type con-
nected with the 3D Helmholtz equation with periodic boundary condition. The
problem of stabilization to zero of the solution for normal parabolic equation
with arbitrary initial condition by starting control is studied. This problem is
reduced to establishing three inequalities connected with starting control, one
of which has been proved in previous publications. The proof for the other two is given here.