Recovering differential operators with two constant delays under Dirichlet/Neumann boundary conditions

This paper deals with non-self-adjoint differential operators with two constant delays generated by -y '' + q(1)(x)y(x - tau(1)) + (-1)(i) q2(x)y(x - tau(2)), where pi/3 <= tau(2) < pi/2 < 2 tau(2) <= tau(2) < tau(1) <pi and potentials q(j) are real-valued functions, q(j) is an element of L-2 [0, pi]. We will prove that the delays and the potentials are uniquely determined from the spectra of four boundary value problems: two of them under boundary conditions y(0) = y(pi) = 0 and the remaining two under boundary conditions y(0) = y' (pi) = 0.