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.2019.07.016Additional 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.