Initial logarithmic coefficients for functions starlike with respect to symmetric points

نویسندگان

چکیده

Abstract In this paper, we obtain the bounds of initial logarithmic coefficients for functions in classes $${\mathcal {S}}_S^*$$ S ? and {K}}_S$$ K which are starlike with respect to symmetric points convex points, respectively. our research, use a different approach than usual one coeffcients f expressed by corresponding positive real part. what follows, express Schwarz functions. proofs, apply some inequalities these obtained Prokhorov Szynal, Carlson Efraimidis. This offers additional benefit. many cases, it is easily possible predict exact result select extremal It case .

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Starlike Functions of order α With Respect To 2(j,k)-Symmetric Conjugate Points

In this paper, we introduced and investigated starlike and convex functions of order α with respect to 2(j,k)-symmetric conjugate points and coefficient inequality for function belonging to these classes are provided . Also we obtain some convolution condition for functions belonging to this class.

متن کامل

Initial coefficients of starlike functions with real coefficients

The sharp bounds for the third and fourth coefficients of Ma-Minda starlike functions having fixed second coefficient are determined. These results are proved by using certain constraint coefficient problem for functions with positive real part whose coefficients are real and the first coefficient is kept fixed. Analogous results are obtained for a general class of close-to-convex functions

متن کامل

Starlike and Convex Functions with Respect to Conjugate Points

An analytic functions f(z) defined on 4 = {z : |z| < 1} and normalized by f(0) = 0, f ′(0) = 1 is starlike with respect to conjugate points

متن کامل

On Starlike and Convex Functions with Respect to k-Symmetric Points

We introduce new subclasses S σ,s k λ, δ, φ and K σ,s k λ, δ, φ of analytic functions with respect to k-symmetric points defined by differential operator. Some interesting properties for these classes are obtained.

متن کامل

A Class of Harmonic Starlike Functions with Respect to Symmetric Points Associated with the Srivastava–wright Generalized Hypergeometric Function

Making use of Srivastava-Wright operator we introduced a new class of complexvalued harmonic functions with respect to symmetric points which are orientation preserving, univalent and starlike. We obtain coefficient conditions, extreme points, distortion bounds, convex combination. Mathematics subject classification (2010): 30C45.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Boletin De La Sociedad Matematica Mexicana

سال: 2021

ISSN: ['2296-4495', '1405-213X']

DOI: https://doi.org/10.1007/s40590-021-00370-y