نتایج جستجو برای: convolution operator

تعداد نتایج: 109683  

Journal: :Journal of Inequalities and Applications 2014

Journal: : 2022

We introduce and study a subclass of meromorphic univalent functions with positive coefficients defined by novel operator obtain coefficient estimates, closure theorems, convolution properties, partial sums, δ- neighborhood for the class .

Journal: :Journal of Nonlinear Sciences and Applications 2019

Journal: :Journal of Inequalities and Applications 2012

2003
V. RAVICHANDRAN S. SIVAPRASAD K. G. SUBRAMANIAN

In the present investigation, the authors derive necessary and sufficient conditions for spirallikeness and convex spirallikeness of a suitably normalized meromorphic p-valent function in the punctured unit disk, using convolution. Also we give an application of our result to obtain a convolution condition for a class of meromorphic functions defined by a linear operator.

2016
Wang Jun

Convolution false-targets jamming against LFM fire-control radars generates range and velocity false targets which are coherent with target echo, which increases the difficulty of jamming detection and suppression and makes the victim radar system lost the track of real target. To combat against this type of jamming, the uncorrelated characteristic between the jamming and echo in FRFT domain is...

2017
Christer O. Kiselman

We study solutions to convolution equations for functions with discrete support in R, a special case being functions with support in the integer points. The Fourier transform of a solution can be extended to a holomorphic function in some domains in C, and we determine possible domains in terms of the properties of the convolution operator.

2015
Sh. Najafzadeh A. Ebadian E. Amini

In this paper we consider the modified Hadamard product or convolution of analytic functions with negative coefficients, combined with an Sǎlǎgean integral operator. We discuss when it is a given class. Following idea of U. Bednarz and J. Sokól we shall determine the order of convolution consistence for certain analytic functions with negative coefficients. AMS Subject Classification: 30C45, 30C50

2007
DING-GONG YANG

Making use of a linear operator, which is defined here by means of the Hadamard product (or convolution), we introduce a class Qp(a, c;h) of analytic and multivalent functions in the open unit disk. An inclusion relation and a convolution property for the class Qp(a, c;h) are presented. Some integral-preserving properties are also given.

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