On coefficient problems for functions starlike with respect to symmetric points
نویسندگان
چکیده
Abstract The main idea of the study on coefficient problems in various classes analytic functions (univalent or nonunivalent) is to express coefficients a given class by corresponding with positive real part. Thus, functionals can be studied using inequalities known for $${\mathcal {P}}$$ P . Lemmas obtained Libera and Z?otkiewicz Prokhorov Szynal play special role this approach. Recently, new way leading results has been pointed out. This approach based relating Schwarz functions. In many cases, if we follow approach, it easy predict exact estimate functional make appropriate computations. proofs these estimates are used not only classical (the Schwarz–Pick Lemma Wiener’s inequality), but also either recently (e.g. Efraimidis) long ago yet almost forgotten (Carlson’s inequality). paper, number will solved described above. object our starlike respect symmetric points associated exponential function.
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ژورنال
عنوان ژورنال: Boletin De La Sociedad Matematica Mexicana
سال: 2022
ISSN: ['2296-4495', '1405-213X']
DOI: https://doi.org/10.1007/s40590-022-00409-8