Results 11 to 20 of about 4,110 (218)

Convex and starlike criteria [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
We investigate an expression involving the quotient of the analytic representations of convex and starlike functions. Sufficient conditions are found for functions to be starlike of a positive order and convex.
Herb Silverman
doaj   +2 more sources

On a coefficient inequality for starlike functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
M. S. Robertson considered a coefficient inequality I I for starlike functions that, if true, would imply a generalized Bieberbach coefficient inequality B B for close to convex functions.
Roger W. Barnard
core   +2 more sources

Integral Means and Arc length of Starlike Log-harmonic Mappings [PDF]

open access: yesAbstract and Applied Analysis, 2011
We use star functions to determine the integral means for starlike log-harmonic mappings. Moreover, we include the upper bound for the arc length of starlike log-harmonic mappings.
Z. Abdulhadi, Y. Abu Muhanna
doaj   +2 more sources

Close-to-starlike logharmonic mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
We consider logharmonic mappings of the form f=z|z|2βhg¯ defined on the unit disc U which can be written as the product of a logharmonic mapping with positive real part and a univalent starlike logharmonic mapping.
Zayid Abdulhadi
doaj   +2 more sources

Quantitative Analysis of Polymers by MALDI-TOF Mass Spectrometry: Correlation Between Signal Intensity and Arm Number. [PDF]

open access: yesJ Mass Spectrom
ABSTRACT The signal intensities of linear and star‐shaped poly(L‐lactides) (PLA) and poly (ethylene oxides) (PEO) were compared to determine the influence of the number of arms on the ionization in matrix‐assisted laser desorption/ionization time‐of‐flight (MALDI‐TOF) mass spectrometry. In this study, a variety of blends were prepared and investigated,
Dalgic MS, Kumar S, Weidner SM.
europepmc   +2 more sources

SOME CRITERIA FOR STARLIKENESS AND STRONGLY STARLIKENESS [PDF]

open access: yesBulletin of the Korean Mathematical Society, 2005
The authors discuss on certain sufficient conditions for starlikeness and strongly starlikeness of analytic functions in the unit disk. Their results generalise and refine known results of \textit{J.-L. Li} and \textit{S. Owa} [Indian J. Pure Math. 33, 313--318 (2002; Zbl 0998.30010), Georgian Math. J. 5, 361--366 (1998; Zbl 0924.30008)] and of \textit{
Xu, Neng, Yang, Dinggong
openaire   +1 more source

The Booth Lemniscate Starlikeness Radius for Janowski Starlike Functions

open access: yesBulletin of the Malaysian Mathematical Sciences Society, 2022
The function $G_\alpha(z)=1+ z/(1-\alpha z^2)$, \, $0\leq \alpha <1$, maps the open unit disc $\mathbb{D}$ onto the interior of a domain known as the Booth lemniscate. Associated with this function $G_\alpha$ is the recently introduced class $\mathcal{BS}(\alpha)$ consisting of normalized analytic functions $f$ on $\mathbb{D}$ satisfying the ...
Somya Malik   +2 more
openaire   +2 more sources

Label-Free Molecular Characterization of Protein Aggregates in Differentiated Astrocytes. [PDF]

open access: yesAdv Sci (Weinh)
Mid‐infrared photothermal microscopy enables label‐free structural, molecular, and functional imaging of protein aggregates in astrocyte cells. The processes of astrocytes differentiated on a nanomaterial interface are characterized by α‐helical signatures combined with enhanced interfacial thermal resistance properties, while the cell soma of non ...
Samolis PD   +9 more
europepmc   +2 more sources

Radius of Starlikeness of Convex Combinations of Univalent Starlike Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1980
The radius of starlikeness of the convex combination \[ t f ( z )
Hamilton, D. H., Tuan, P. D.
openaire   +1 more source

Janowski subclasses of starlike mappings

open access: yes, 2022
In this paper, two subclasses of biholomorphic starlike mappings named Janowski starlike and Janowski almost starlike with complex parameters are in- troduced and studied. We determine M such that holomorphic mappings f which satisfy the condition lDf (z)
CURT, Paula
core   +1 more source

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