Skip to main content

and
  1. Article

    Open Access

    Upper bound for the second and third Hankel determinants of analytic functions associated with the error function and q-convolution combination

    Recently, El-Deeb and Cotîrlă (Mathematics 11:11234834, 2023) used the error function together with a q-convolution to introduce a new operator. By means of this operator the following class

    Hari M. Srivastava, Daniel Breaz in Journal of Inequalities and Applications (2024)

  2. Article

    Open Access

    The study of coefficient estimates and Fekete–Szegö inequalities for the new classes of m-fold symmetric bi-univalent functions defined using an operator

    The objective of this paper is to introduce new classes of m-fold symmetric bi-univalent functions. We discuss estimates on the Taylor–Maclaurin coefficients ...

    Daniel Breaz, Luminiţa-Ioana Cotîrlă in Journal of Inequalities and Applications (2023)

  3. No Access

    Article

    Applications of fractional derivatives for Alexander integral operator

    Let \(T_n\) T n

    Hatun Özlem Güney, Mugur Acu, Daniel Breaz, Shigeyoshi Owa in Afrika Matematika (2021)

  4. No Access

    Article

    Bernstein and Turán-type inequalities for a polynomial with constraints on its zeros

    This paper considers the well known Bernstein and Turán-type inequalities that relate the uniform norm of a polynomial to that of its derivative on the unit circle in the plane. Here, we establish some new ine...

    Abdullah Mir, Daniel Breaz in Revista de la Real Academia de Ciencias Ex… (2021)

  5. No Access

    Chapter

    Univalence Conditions and Properties for Some New Integral Operators

    In this paper we introduce three new integral operators. For these operators we prove the univalence conditions, the convexity order and some other properties for some special classes of functions. In view of ...

    Nicoleta Ularu, Daniel Breaz in Mathematics Without Boundaries (2014)

  6. No Access

    Article

    Some univalence conditions for a general integral operator

    The authors consider the classes of the univalent functions denoted by SH(β), SP and SP(α, β). On these classes, the univalence conditions for a general integral operator are studied.

    Laura Stanciu, Daniel Breaz in Chinese Annals of Mathematics, Series B (2012)

  7. Article

    Open Access

    Sufficient Conditions for Univalence of an Integral Operator

    In this paper we have introduced an integral general operator. For this general operator which is a generalization of more known integral operators we have demonstrated some univalence properties.

    Georgia Irina Oros, Gheorghe Oros, Daniel Breaz in Journal of Inequalities and Applications (2008)

  8. Article

    Open Access

    On the Univalence Criterion of a General Integral Operator

    In this paper we considered an general integral operator and three classes of univalent functions for which the second order derivative is equal to zero. By imposing supplimentary conditions for these function...

    Daniel Breaz, HÖzlem Güney in Journal of Inequalities and Applications (2008)

  9. Article

    Open Access

    Sufficient Univalence Conditions for Analytic Functions

    We consider a general integral operator and the class of analytic functions. We extend some univalent conditions of Becker's type for analytic functions using a general integral transform.

    Daniel Breaz, Nicoleta Breaz in Journal of Inequalities and Applications (2008)

  10. Article

    Open Access

    Certain Integral Operators on the Classes and

    We consider the classes and of the analytic functions and ...

    Daniel Breaz in Journal of Inequalities and Applications (2008)

  11. Article

    Open Access

    A Convexity Property for an Integral Operator on the Class

    We consider an integral operator, , for analytic functions,

    Daniel Breaz in Journal of Inequalities and Applications (2008)