Results 241 to 250 of about 26,251,070 (268)

Neighborhoods of certain p-valent analytic functions with complex order [PDF]

open access: yesComputers and Mathematics With Applications, 2009
In this paper, the authors prove several coefficient bounds, distortion inequalities of the class Sgn(p,λ,b,β) of p-valent analytic functions of complex order.
A O Mostafa, M K Aouf
exaly   +2 more sources

On the subclass of p -valently functions

Applied Mathematics and Computation, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
ÖZDEMİR, Murat   +2 more
openaire   +3 more sources

The Schwarzian Derivative of a p-Valent Function

Mathematical Notes, 2020
The author shows that a comparison of the capacities of suitable condensers leads to estimates for Schwarzian derivatives \[S_f(z)=\frac{f'''(z)}{f'(z)}-\frac{3}{2}\left(\frac{f''(z)}{f'(z)}\right)^2=6\lim_{\lambda\to z}\left(\frac{f'(z)f'(\lambda)}{(f(z)-f(\lambda))^2}-\frac{1}{(z-\lambda)^2}\right)\] of holomorphic functions in the unit disk \(U=\{z ...
openaire   +1 more source

On certain meromorphic p-valent starlike functions

Journal of the Franklin Institute, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

A generalization on subfamily of p-valent functions with negative coefficients

Applied Mathematics and Computation, 2004
This paper introduces a highly specialized class of multivalent functions. A function \(f(z)\) is defined to be in the class \(P^*_p(\alpha,\beta, \xi,N)\) if \(f(z)\) is analytic and \(p\)-valent in the unit disk \(U\), is of the form \(f(z) = z^p - \sum_{k=p+1}^\infty a_k z^k\) where all \(a_k \geq 0\), and \[ | (D^Nf(z))'z^{1-p} - p^{N+1}| < \beta ...
Kiziltunç, Hükmi, ORHAN, Halit
openaire   +2 more sources

Functions that are mean p-valent with respect to ?-area

Mathematical Notes of the Academy of Sciences of the USSR, 1985
Let f(z) be regular or meromorphic in a domain D and let n(w), \(w=re^{it}\), be the number of roots of the equation \(f(z)=w\), which lie in D. Let us put \[ p(r)=(1/2\pi)\int^{2\pi}_{0}n(re^{it})dt,\quad W_{\mu}(R)=\int^{R}_{0}p(r)d(r^{2\mu}). \] If for some positive numbers p,\(\mu\) we have \(W_{\mu}(R)\leq pR^{2\mu}\) for all \(R>0\), then the ...
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p-valent analytic function with negative coefficients

1989
Let \(f(z)=z^ p-\sum^{\infty}_{n=1}| a_{n+p}| z^{n+p}\) be analytic and p-valent in the unit disc \(E=\{z:\) \(| z|
Murthy, M. R. Krishna, Sarangi, S. M.
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On the derivative of bounded \(p\)-valent functions

1960
Artykuł z: Annales Universitatis Mariae Curiae-Skłodowska. Sectio A, Mathematica. Vol. 12 (1958), s. 23-28, streszcz. pol., ros. ; Artykuł z: Annales Universitatis Mariae Curiae-Skłodowska. Sectio A, Mathematica. Vol. 12 (1958), s. 23-28, streszcz. pol., ros.
openaire   +1 more source

A New Criterion for p-Valent Functions

Proceedings of the American Mathematical Society, 1980
Goel, R. M., Sohi, N. S.
openaire   +1 more source

Certain Results on Fuzzy p-Valent Functions Involving the Linear Operator

Mathematics, 2023
Miguel Vivas-Cortez   +2 more
exaly  

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