Published September 2019 | Version v1
Journal article

Analysis of recent fractional evolution equations and applications

  • 1. Department of Mathematical Sciences, University of South Africa, Florida, 0003 South Africa (United States)
  • 2. Department of Electrical Engineering, Tshwane University of Technology, Pretoria 0183 (South Africa)

Description

It is believed that Mittag-Leffler function and its variants govern the solutions of most fractional evolution equations. Is it always true? We establish some unknown and useful properties that characterize some aspects of fractional calculus above power-law. These include, the correspondence relations, the equality of mixed partials, the boundedness, the continuity and the eigen-property for the derivative with non singular kernel. Some related evolution equations are studied using those properties and they unexpectedly show that solutions are not governed by Mittag-Leffler function nor its variants. Rather, solutions are governed by unusual functions of type exponential (37), easier to handle and more friendly than power series like Mittag-Leffler functions. Numerical approximations of a second order nonhomogeneous fractional Cauchy problem are performed and show regularity in the dynamics. An application to a geoscience model, the Rössler system of equations is performed where existence and uniqueness results are provided. The system appears to be chaotic and the properties of the derivative with no singular kernel do not interrupt this chaos. We conclude by a similar application to heat model where we solve the model numerically and graphically reveal solutions comparable with expected exact ones.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.chaos.2019.07.016

Additional details

Identifiers

DOI
10.1016/j.chaos.2019.07.016;
PII
S0960077919302681;

Publishing Information

Journal Title
Chaos, Solitons and Fractals
Journal Volume
126
Journal Page Range
p. 337-350
ISSN
0960-0779

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54120661
Subject category
S97: MATHEMATICAL METHODS AND COMPUTING;
Descriptors DEI
APPROXIMATIONS; CAUCHY PROBLEM; CHAOS THEORY; EVOLUTION EQUATIONS; FUNCTIONS; HEAT; POWER SERIES
Descriptors DEC
CALCULATION METHODS; DIFFERENTIAL EQUATIONS; ENERGY; EQUATIONS; MATHEMATICS; SERIES EXPANSION

Optional Information

Copyright
Copyright (c) 2019 Elsevier Ltd. All rights reserved.