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JOURNALS // Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences // Archive

Vestn. Samar. Gos. Tekhn. Univ., Ser. Fiz.-Mat. Nauki [J. Samara State Tech. Univ., Ser. Phys. Math. Sci.], 2020 Volume 24, Number 2, Pages 379–389 (Mi vsgtu1734)

This article is cited in 2 papers

Short Communication
Differential Equations and Mathematical Physics

$\alpha$-Differentiable functions in complex plane

R. Pashaeia, A. Pishkoob, M. S. Asgaria, D. Ebrahimi Baghaa

a Islamic Azad University, Central Tehran Branch, Tehran, Iran
b Nuclear Science and Technology Research Institute, Tehran, Iran

Abstract: In this paper, the conformable fractional derivative of order $\alpha$ is defined in complex plane. Regarding to multi-valued function $z^{1-\alpha}$, we obtain fractional Cauchy–Riemann equations which in case of $\alpha=1$ give classical Cauchy–Riemann equations. The properties relating to complex conformable fractional derivative of certain functions in complex plane have been considered. Then, we discuss about two complex conformable differential equations and solutions with their Riemann surfaces. For some values of order of derivative, $\alpha$, we compare their plots.

Keywords: conformable fractional derivative, Cauchy–Riemann equations, limit based fractional derivative.

UDC: 517.548

MSC: 26A33, 32A10

Received: August 9, 2019
Revised: February 19, 2020
Accepted: March 16, 2020
First online: May 25, 2020

Language: English

DOI: 10.14498/vsgtu1734



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