Results 1 to 10 of about 854,777 (264)

Inequalities for the Polar Derivative of a Polynomial [PDF]

open access: yesJournal of Inequalities and Applications, 2009
Let p(z) be a polynomial of degree n and for any real or complex number α, and let Dαp(z)=np(z)+(α−z)p′(z) denote the polar derivative of the polynomial p(z) with respect to α.
M. Bidkham   +2 more
doaj   +3 more sources

Generalizations of Zygmund-type integral inequalities for the polar derivative of a complex polynomial

open access: yesJournal of Inequalities and Applications, 2020
Some Zygmund-type integral inequalities for the polar derivatives of complex polynomials, inspired by the classical Bernstein-type inequalities that relate the uniform norms of polynomials and their derivatives on the unit circle, are investigated.
Gradimir V. Milovanović, Abdullah Mir
doaj   +3 more sources

New antifungal and less toxic zwitterionic derivatives of 26-membered polyene antibiotic – pimaricin containing N-benzyl and N-alkyl moieties and their molecular mechanism [PDF]

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry
N-derivatives of pimaricin (PIM) were synthesised as zwitterions or in a non-ionic form, influencing water solubility and toxicity in normal cells (HDF).
Ewelina Smolarz   +8 more
doaj   +2 more sources

Some generalized results of zeros of polar derivative of a polynomial [PDF]

open access: yesJournal of Hyperstructures, 2021
In the present paper, we further generalize and extend various results on zeroes of polar derivatives of polynomials due toGulzar, Zargar and Akhter (2019), who gave extension and generalization of various results on Enestrom-Kakeya theorem established ...
Ram Milan Singh
doaj   +1 more source

REFINEMENT OF SOME BERNSTEIN TYPE INEQUALITIES FOR RATIONAL FUNCTIONS

open access: yesПроблемы анализа, 2022
In this paper, we establish some Bernstein-type inequalities for rational functions with prescribed poles. These results refine prior inequalities on rational functions and strengthen many well-known polynomial inequalities.
Idrees Qasim
doaj   +1 more source

Polar Flagella Glycosylation in Aeromonas: Genomic Characterization and Involvement of a Specific Glycosyltransferase (Fgi-1) in Heterogeneous Flagella Glycosylation

open access: yesFrontiers in Microbiology, 2021
Polar flagella from mesophilic Aeromonas strains have previously been shown to be modified with a range of glycans. Mass spectrometry studies of purified polar flagellins suggested the glycan typically includes a putative pseudaminic acid like derivative;
Gabriel Forn-Cuní   +8 more
doaj   +1 more source

Some inequalities for the polar derivative of some classes of polynomials [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2019
In this paper, we investigate an upper bound of the polar derivative of a polynomial of degree where zeros are in and the remaining zeros are outside where .
Nuttapong Arunrat   +1 more
doaj   +1 more source

ON ZYGMUND–TYPE INEQUALITIES CONCERNING POLAR DERIVATIVE OF POLYNOMIALS

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   +1 more source

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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