Results 11 to 20 of about 79,547 (300)

ON ZYGMUND–TYPE INEQUALITIES CONCERNING POLAR DERIVATIVE OF POLYNOMIALS [PDF]

open access: yesUral Mathematical Journal, 2021
Let \(P(z)\) be a polynomial of degree \(n\), then concerning the estimate for maximum of \(|P'(z)|\) on the unit circle, it was proved by S. Bernstein that \(\| P'\|_{\infty}\leq n\| P\|_{\infty}\).
Nisar Ahmad Rather   +2 more
doaj   +3 more sources

Estimates for the polar derivative of a constrained polynomial on a disk [PDF]

open access: yesCubo, 2022
This work is a part of a recent wave of studies on inequalities which relate the uniform-norm of a univariate complex coefficient polynomial to its derivative on the unit disk in the plane.
Gradimir V. Milovanović   +2 more
doaj   +3 more sources

Integral mean estimates of Turán-type inequalities for the polar derivative of a polynomial with restricted zeros [PDF]

open access: yesOpen Mathematics
In this article, we extend inequalities concerning the polar derivative of a polynomial to integral mean for the class of polynomials with s-fold zero at the origin and the remaining zeros inside some closed disk of radius kk for k≥1k\ge 1 and k≤1k\le 1,
Singha Nirmal Kumar, Chanam Barchand
doaj   +2 more sources

INTEGRAL ANALOGUE OF TURÁN-TYPE INEQUALITIES CONCERNING THE POLAR DERIVATIVE OF A POLYNOMIAL [PDF]

open access: yesUral Mathematical Journal
If \(w(\zeta)\) is a polynomial of degree $n$ with all its zeros in \(|\zeta|\leq \Delta, \Delta\geq 1\) and any real \(\gamma\geq 1\), Aziz proved the integral inequality [1] $$ \left\lbrace\int_{0}^{2\pi}\left|1+\Delta^ne^{i\theta}\right|^{\gamma}d ...
Mayanglambam Singhajit Singh   +1 more
doaj   +3 more sources

Valiron’s Interpolation Formula and a Derivative Sampling Formula in the Mellin Setting Acquired via Polar-Analytic Functions [PDF]

open access: yes, 2023
In this paper, we first recall some recent results on polar-analytic functions. Then we establish Mellin analogues of a classical interpolation of Valiron and of a derivative sampling formula. As consequences a new differentiation formula and an identity
Mantellini, Ilaria   +3 more
core   +4 more sources

Lp-inequalities for the polar derivative of a lacunary-type polynomial [PDF]

open access: yes, 2021
In this paper, we extend an inequality concerning the polar derivative of a polynomial in Lp-norm to the class of lacunary polynomials and thereby obtain a bound that depends on some of the coefficients of the polynomial as ...
Gulzar, Suhail   +2 more
core   +1 more source

Inequalities concerning the rate of growth of polynomials involving the polar derivative [PDF]

open access: yes, 2020
This paper contains some results for algebraic polynomials in the complex plane involving the polar derivative that are inspired by some classical results of Bernstein.
Mir, Abdullah, Malik, Adil Hussain
core   +2 more sources

Polynomials with polar derivatives [PDF]

open access: yesFunctiones et Approximatio Commentarii Mathematici, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mir, Abdullah, Wani, Ajaz
openaire   +2 more sources

Search for Non-Protein Protease Inhibitors Constituted with an Indole and Acetylene Core

open access: yesMolecules, 2021
A possible inhibitor of proteases, which contains an indole core and an aromatic polar acetylene, was designed and synthesized. This indole derivative has a molecular architecture kindred to biologically relevant species and was obtained through five ...
Marco A. Almaraz-Girón   +7 more
doaj   +1 more source

Synthesis, spectroscopy, and photophysical properties of newly magnesium (II) phthalocyanine

open access: yesMANAS: Journal of Engineering, 2021
2(3),9(10),16(17),23(24)-tetrakis-2,6-dimethoxyphenoxy substituted magnesium (II) phthalocyanine, which has very good solubility in polar and non-polar solvents and does not aggregate, was synthesized.
Mehmet Pişkin   +2 more
doaj   +1 more source

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