Generalizations of Bernstein and Turán-Type Inequalities for the Polar Derivative of a Complex Polynomial

The goal of this paper is to extend to the polar derivatives some previous inequalities between the L γ -norms of the derivative and of the polynomial itself, in case when the zeros are outside or inside some closed disk. Apart from this, our results also derive polar derivative analogues of some cl...

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Veröffentlicht in:	Mediterranean journal of mathematics 2020-02, Vol.17 (1), Article 14
1. Verfasser:	Mir, Abdullah
Format:	Artikel
Sprache:	eng
Schlagworte:	Inequalities Mathematics Mathematics and Statistics Norms Polynomials
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container_title	Mediterranean journal of mathematics
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description	The goal of this paper is to extend to the polar derivatives some previous inequalities between the L γ -norms of the derivative and of the polynomial itself, in case when the zeros are outside or inside some closed disk. Apart from this, our results also derive polar derivative analogues of some classical Bernstein and Turán-type inequalities that relate the sup-norms of a polynomial to that of its derivative on the unit circle.
doi_str_mv	10.1007/s00009-019-1446-3
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subjects	Inequalities Mathematics Mathematics and Statistics Norms Polynomials
title	Generalizations of Bernstein and Turán-Type Inequalities for the Polar Derivative of a Complex Polynomial
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