ALGEBRAIC CHARACTERIZATION OF POLYNOMIALS WHOSE ZEROS LIE IN CERTAIN ALGEBRAIC DOMAINS

-A new algebraic criterion is given for a polynomial f0 with complex coefficients to have all its zeros in a certain type of algebraic region r of the complex plane. In particular, F may be any circle or half plane. The criterion is effectively computable from the coefficients of the polynomial up. The classical results of Hermite, Hurwitz, Lyapunov, Schur-Cohn, and others appear as special cases of the new criterion.