Some inequalities for a certain subclass of Bazilevič functions involving multiplicative calculus

UDC 517.5 We define a new class of functions expressed as a convex combination of differential characterizations affected by the multiplicative derivative. Multiplicative derivative is defined in a domain, which excludes zero. Hence, in this case, the defined subclass does not involve replacing the ordinary derivative with a multiplicative derivative. However, we have used the motivation behind the purpose of this restrictive calculus given by the circumstances that we have a more versatile calculus of Newton and Euler. Estimates involving the initial coefficients of the functions, which have Maclaurin series and belong to the given function class are our main results. Some examples, along with the graphs, are used to establish the inclusion and the closure properties. Moreover, we obtain the logarithmic and inverse coefficients for the analyzed function class.

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Publication Details

Journal
Ukrains’kyi Matematychnyi Zhurnal
Published
2025-03-30
DOI
https://doi.org/10.3842/umzh.v77i2.8288
Primary Topic
Analytic and geometric function theory
Type
article
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article

Some inequalities for a certain subclass of Bazilevič functions involving multiplicative calculus

Sakkarai Lakshmi, Kadhavoor R. Karthikeyan, Seetharam Varadharajan
Ukrains’kyi Matematychnyi Zhurnal
Analytic and geometric function theory
article

Some inequalities for a certain subclass of Bazilevič functions involving multiplicative calculus

Sakkarai Lakshmi, Kadhavoor R. Karthikeyan, Seetharam Varadharajan
article en

Abstract

UDC 517.5 We define a new class of functions expressed as a convex combination of differential characterizations affected by the multiplicative derivative. Multiplicative derivative is defined in a domain, which excludes zero. Hence, in this case, the defined subclass does not involve replacing the ordinary derivative with a multiplicative derivative. However, we have used the motivation behind the purpose of this restrictive calculus given by the circumstances that we have a more versatile calculus of Newton and Euler. Estimates involving the initial coefficients of the functions, which have Maclaurin series and belong to the given function class are our main results. Some examples, along with the graphs, are used to establish the inclusion and the closure properties. Moreover, we obtain the logarithmic and inverse coefficients for the analyzed function class.

Ukrains’kyi Matematychnyi ZhurnalVol. 77(2)
Muscat College (OM), University of Technology and Applied Sciences - Al Mussanah (OM)
Openalex Percentile: Top 89%
Analytic and geometric function theory
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Some inequalities for a certain subclass of Bazilevič functions involving multiplicative calculus — Sakkarai Lakshmi, Kadhavoor R. Karthikeyan, et al. · Ukrains’kyi Matematychnyi Zhurnal (2025) | TGRS Research Map | TGRS