Abstract
This paper deals with a theoretical mathematical analysis of a Cauchy problem for the time-fractional diffusion-wave equation in the upper half-plane, \(x\in \mathbb {R}\), \(t\in \mathbb {R}^+\), where the Caputo fractional derivative of order \(\alpha \in \left( 0,2\right) \) is considered. An explicit solution to this Cauchy problem is obtained via separation of variables. A first proof of the validity of the obtained results is provided for a certain kind of initial conditions. Throughout this work a new expression of the solution to this problem and its utility for carrying out rigurous proofs are presented. Finally, several new properties of the solution are obtained.
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Notes
The Beta function is defined as \(\mathcal {B}\left( x,y\right) :=\int \limits _0^{1}(1-r)^{x-1}r^{y-1}dr\), convergent for \(x,y>0\).
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Acknowledgements
We would like to express our gratitude towards the referees who reviewed this paper for their useful suggestions and helpful comments. This paper has been sponsored by Project ING349 “Problemas de frontera libre con ecuaciones diferenciales fraccionarias”, from Universidad Nacional de Rosario, Argentina and “Beca Estímulo a las Vocaciones Científicas en el marco del Plan de Fortalecimiento de la Investigación Científica, el Desarrollo Tecnológico y la Innovación en las Universidades Nacionales” from Consejo Interuniversitario Nacional, Argentina.
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Communicated by Luis Vega.
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Goos, D.N., Reyero, G.F. Mathematical Analysis of a Cauchy Problem for the Time-Fractional Diffusion-Wave Equation with \( \alpha \in \left( 0,2\right) \) . J Fourier Anal Appl 24, 560–582 (2018). https://doi.org/10.1007/s00041-017-9527-9
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DOI: https://doi.org/10.1007/s00041-017-9527-9
Keywords
- Time-fractional diffusion-wave equation
- Caputo fractional derivative
- Cauchy problem
- Mittag–Leffler function
- Mainardi function
- Fourier transform