Virtual roots of real polynomials
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Laureano Gonzalez-Vega; Henri Lombardi; Louis Mahé
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Article
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1998
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Elsevier Science
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English
⚖ 888 KB
The fact that a real univariate polynomial misses some real roots is usually overcome by considering complex roots, but the price to pay for, is a complete loss of the sign structure that a set of real roots is endowed with (mutual position on the line, signs of the derivatives, etc.). In this paper