Comments on Determining the Number of Zeros of a Complex Polynomial in a Half-Piane *
نویسنده
چکیده
We comment on recently proposed algorithms for determining the number of zeros of a complex polynomial in a half-plane, such as Agashe's method (1985) and Benidir and Picinbono's ERT (1991). Following an exposition of Talbot (1960) we construct an easier device, which we call "Talbot's Table" (TT), to replace the old Routh's Table (RT). Moreover, it is shown that the old RT is capable of answering stability questions even when it breaks down.
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