Results 11 to 20 of about 74,859 (265)

Inequalities for the Polar Derivative of a Polynomial

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   +4 more sources

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

Inequalities for the Polar Derivative of a Polynomial [PDF]

open access: yesAbstract and Applied Analysis, 2012
For a polynomial 𝑝(𝑧) of degree 𝑛, we consider an operator 𝐷𝛼 which map a polynomial 𝑝(𝑧) into 𝐷𝛼𝑝(𝑧)∶=(𝛼−𝑧)𝑝′(𝑧)+𝑛𝑝(𝑧) with respect to 𝛼. It was proved by Liman et al. (2010) that if 𝑝(𝑧) has no zeros in |𝑧|
Ahmad Zireh
doaj   +4 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

Stem cell-derived polarized hepatocytes [PDF]

open access: yesNature Communications, 2020
AbstractHuman stem cell-derived hepatocyte-like cells (HLCs) offer an attractive platform to study liver biology. Despite their numerous advantages, HLCs lack critical in vivo characteristics, including cell polarity. Here, we report a stem cell differentiation protocol that uses transwell filters to generate columnar polarized HLCs with clearly ...
Viet Loan Dao Thi   +19 more
openaire   +3 more sources

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

Deriving polarity from granularity

open access: yesSemantics and Linguistic Theory, 2021
In this paper, we present a way to unify Positive Polarity Items formed with some NP and minimizers, such as lift a finger. The connection is made via granularity properties of the two classes of polarity sensitive expressions. We begin with an observation in Strawson 1974 that the use of some NP involves an inference about the availability of a more ...
Julie Goncharov, Lavi Wolf
openaire   +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

Extension of Some Polynomial Inequalities to the Polar Derivative and the Generalized Polar Derivative

open access: yesInternational Journal of Advanced Research in Science, Communication and Technology, 2023
In this paper certain polynomial inequalities for the polar derivative and the generalized polar derivative with restricted zeros are given, which generalize and refine some well-known polynomial inequalities due to Lax, Tura ́n, AlSaeedi, Rather, Ali, Shafi, and Dar and others.
null Adeeb T. Al-Saeedi   +2 more
openaire   +1 more source

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