Results 61 to 70 of about 28,953 (166)
Convexity of Certain q-Integral Operators of p-Valent Functions
Abstract and Applied Analysis, 2014 By applying the concept (and theory) of fractional q-calculus, we first define and introduce two new q-integral operators for certain analytic functions defined in the unit disc 𝒰.
K. A. Selvakumaran +3 more
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Study of simply connected domain and its geometric properties
Journal of Taibah University for Science, 2019 By using composition of a differential operator and a subclass of analytic functions, we introduce a new application of a differential operator for starlike and convex functions.
M. I. Faisal
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Inclusion Properties for Classes of p-Valent Functions
Journal of Function SpacesMaking use of a differential operator, which is defined here by means of the Hadamard product, we introduce classes of p-valent functions and investigate various important inclusion properties and characteristics for these classes.
B. M. Munasser +4 more
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On Parametric p-Valent Meromorphic Functions [PDF]
Journal of Mathematics and Statistics, 2010 Problem statement: In this research, we studied parametric p-valent meromorphic functions Pαf by considering two classes Mαp (β) and Mαp (λ,A) . Approach: With the help of Jack’s Lemma an inclusion relation for the class Mαp was obtained and it is shown that this class is closed by an integral operator Ic.
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On coefficients of some p-valent starlike functions
Filomat, 2019 We consider the class Ap of functions f analytic in the unit disk |z| < 1 in the complex plane, of the form f(z) = zp + ... such that Rezf(p)(z)/f (p-1)(z) > 0 in the unit disc. The object of the present paper is to derive some bounds for coefficients in this class and relation with the functions satisfying condition Ref(k)(z)/f(p-k ...
Mamoru Nunokawa +2 more
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On certain classes of fractional p-valent analytic functions
Известия Иркутского государственного университета: Серия "Математика", 2015 The theory of analytic functions and more specific p-valent functions, is one of the most fascinating topics in one complex variable. There are many remarkable theorems dealing with extremal problems for a class of p-valent functions on the unit disk U ...
E. El-Yagubi, M. Darus
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a*-families of analytic functions
International Journal of Mathematics and Mathematical Sciences, 1984 Using convolutions, a new family of analytic functions is introduced. This family, called a*-family, serves in certain situations to unify the study of many previously well known classes of analytic functions like multivalent convex, starlike, close-to ...
G. P. Kapoor, A. K. Mishra
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Demonstratio MathematicaIn this study, subordination, superordination, and sandwich theorems are established for a class of p-valent analytic functions involving a generalized integral operator that has as a special case p-valent Sălăgean integral operator. Relevant connections
Almutairi Norah Saud +2 more
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Fekete-Szegő Inequality for a Subclass of p-Valent Analytic Functions
Journal of Applied Mathematics, 2013 The main object of this paper is to study Fekete-Szegő problem for the class of p-valent functions. Fekete-Szegő inequality of several classes is obtained as special cases from our results.
Mohsan Raza +2 more
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BMC Infectious Diseases, 2003 Background An 11-valent pneumococcal conjugate vaccine could provide significantly larger reduction in pneumococcal disease burden than the currently available 7-valent vaccine formulation in many countries.
Käyhty Helena +5 more
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