Abstract
Fokker–Planck equation with interval and fuzzy uncertainty has been considered in this paper. Also the derivatives involved with respect to time and space are assumed to be fractional in nature. This problem has been solved using variational iteration method (VIM) along with the double parametric form of fuzzy numbers. For the analysis, both triangular and Gaussian normalised fuzzy sets are taken into consideration. Numerical results for different cases have been obtained and those are depicted in terms of plots and are also compared in special cases for the validation. Moreover, using an important method known as successive approximation method, it has also been verified that the obtained solutions are the same as that of VIM as both methods are equivalent.
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The authors would like to thank the anonymous reviewer and editor for their valuable suggestions and comments to improve the quality and clarity of the manuscript.
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Tapaswini, S., Behera, D. Imprecisely defined fractional-order Fokker–Planck equation subjected to fuzzy uncertainty. Pramana - J Phys 95, 13 (2021). https://doi.org/10.1007/s12043-020-02033-5
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DOI: https://doi.org/10.1007/s12043-020-02033-5
Keywords
- Triangular fuzzy number
- Gaussian fuzzy number
- r-cut
- double parametric form
- Fokker–Planck equation
- variational iteration method