Uni-variate polynomials in analysis : hyperbolic polynomials, order of moduli, and descartes’ rule of signs / Vladimir P. Kostov.

Format:

Book

Author/Creator:

Vladimir P. Kostov, author.

Series:

De Gruyter expositions in mathematics ; Volume 78.

De Gruyter expositions in mathematics ; Volume 78

Language:

English

Subjects (All):

Mathematical analysis.

Physical Description:

1 online resource

Edition:

1st ed.

Other Title:

Hyperbolic polynomials, order of moduli, and descartes’ rule of signs

Place of Publication:

Berlin ; Boston : De Gruyter, [2025]

Summary:

"The book summarizes recent results on problems with uni-variate polynomials. The first of them reads: given the signs of the coefficients of a real polynomial (i. e. its sign pattern), for which pairs of prescribed numbers of positive and negative roots (compatible with Descartes’ rule of signs) can one find such a polynomial? For each degree greater or equal to 4, there are non-realizable cases. The problem is resolved for degree less or equal to 8. In another realization problem (resolved for degree less or equal to 5), one fixes the pairs (compatible with Rolle’s theorem) of numbers of positive and negative roots of the polynomial and its non-constant derivatives. A third problem concerns polynomials with all roots real. One considers the sign pattern and the order in which the moduli of its positive and negative roots are arranged on the positive half-line. There are examples of pairs (sign pattern, order of moduli) compatible with Descartes’ rule of signs that are not realizable. And there are various questions about the discriminant of the general family of uni-variate polynomials. The non-trivial answers to these simply formulated problems will give students and scholars a better understanding of uni-variate polynomials."-- Provided by publisher.

Notes:

Includes bibliographical references and index.

Description based on publisher supplied metadata and other sources.

ISBN:

9783112218853

3-11-221885-X

OCLC:

1533785742