arXiv:2610.37743v1 Announce Type: new Abstract: We establish necessary and sufficient conditions for a complex polynomial to have a prescribed multiset of roots, expressed in terms of its coefficients and complete homogeneous symmetric polynomials. These conditions extend the classical Vieta formulas and yield explicit formulas for the coefficients of the corresponding quotient. We apply our results to obtain characterizations of Kronecker polynomials through identities involving symmetric polynomials and construct Borwein multiples of products of cyclotomic polynomials.
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