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作者

Yue, Chao Wang, Xiaoyan

作者单位

College of Medical Information Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences

刊名

Mathematical Methods in the Applied Sciences

年份

2021

页码

1

ISSN

0170-4214

关键词

auto‐Bä cklund transformation exact solutions local fractional variable‐coefficient NLEEs nonlocal symmetries

摘要

Starting from a local fractional variable‐coefficient Ablowitz–Kaup–Newell –Segur spectral problem involving an arbitrary function et0Ita, we derive a hierarchy of fractional variable‐coefficient nonlinear evolution equations , which possesses Hamiltonian structure. It is interesting that the hierarchy is explicitly related to many important equations such as the fractional variable‐coefficient nonlinear Schr ödinger equation, the fractional variable‐coefficient Burgers equation, and the f...更多

Starting from a local fractional variable‐coefficient Ablowitz–Kaup–Newell –Segur spectral problem involving an arbitrary function et0Ita, we derive a hierarchy of fractional variable‐coefficient nonlinear evolution equations , which possesses Hamiltonian structure. It is interesting that the hierarchy is explicitly related to many important equations such as the fractional variable‐coefficient nonlinear Schr ödinger equation, the fractional variable‐coefficient Burgers equation, and the fractional variable‐coefficient mKdV equation involving time‐dependent damping and dispersion. Then, the truncated Painlevé method is generalized to find the multiple nonlocal symmetries of the fractional variable‐coefficient Burgers equation. Then, starting from the initial value problem of the localized symmetries for the expanded system, we derive the auto‐B äcklund transformation of the fractional variable‐coefficient Burgers equation. Furthermore, exact solutions of the fractional variable‐coefficient mKdV equation is obtained by the improved solitary ansatze methods.收起

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