• 제목/요약/키워드: Caratheodory functions

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DIFFERENTIAL INEQUALITIES ASSOCIATED WITH CARATHÉODORY FUNCTIONS

  • In Hwa, Kim;Nak Eun, Cho
    • Nonlinear Functional Analysis and Applications
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    • 제27권4호
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    • pp.773-784
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    • 2022
  • The purpose of the present paper is to estimate some real parts for certain analytic functions with some applications in connection with certain integral operators and geometric properties. Also we extend some known results as special cases of main results presented here.

A REFINEMENT OF THE THIRD HANKEL DETERMINANT FOR CLOSE-TO-CONVEX FUNCTIONS

  • Laxmipriya Parida;Teodor Bulboaca;Ashok Kumar Sahoo
    • 호남수학학술지
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    • 제46권3호
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    • pp.515-521
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    • 2024
  • In our paper, by using different inequalities regarding the coefficients of the normalized close-to-convex functions in the open unit disk, we found a smaller upper bound of the third Hankel determinant for the class of close-to-convex functions as compared with those obtained by Prajapat et. al. in 2015.

Estimates of invariant metrics on some pseudoconvex domains in $C^N$

  • Cho, Sang-Hyun
    • 대한수학회지
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    • 제32권4호
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    • pp.661-678
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    • 1995
  • In this paper we will estimate from above and below the values of the Bergman, Caratheodory and Kobayashi metrics for a vector X at z, where z is any point near a given point $z_0$ in the boundary of pseudoconvex domains in $C^n$.

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A PROPERTY OF CERTAIN ANALYTIC FUNCTIONS

  • Shigeyoshi Owa;Kang, Jin-Sook
    • 대한수학회보
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    • 제32권2호
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    • pp.201-204
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    • 1995
  • Let N be the class of functions of the form $$ (1.1) p(z) = 1 + p_1 z + p_2 z^2 + \cdots $$ which are analytic in the open unit disk $U = {z : $\mid$z$\mid$ < 1}$. If $p(z) \in N$ satisfies $Rep(z) > 0 (z \in U)$, then p(z) is called a Caratheodory function (cf. Goodman [2]).

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VECTOR EQUILIBRIUM PROBLEMS FOR TRIFUNCTION IN MEASURABLE SPACE AND ITS APPLICATIONS

  • RAM, TIRTH;KHANNA, ANU KUMARI
    • Journal of applied mathematics & informatics
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    • 제40권3_4호
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    • pp.577-585
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    • 2022
  • In this work, we introduced and study vector equilibrium problems for trifunction in measurable space (for short, VEPMS). The existence of solutions of (VEPMS) are obtained by employing Aumann theorem and Fan KKM lemma. As an application, we prove an existence result for vector variational inequality problem for measurable space. Our results in this paper are new which can be considered as significant extension of previously known results in the literature.