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  • 學位論文

反應擴散方程式行波解的變分結構

A Variational Formula for Traveling Wave Solutions of Reaction-diffusion Equations

指導教授 : 陳俊全

摘要


在這篇論文中,我們發現雙穩反應擴散方程式的一個變分結構。透過探討這個結構的特性,並且經由找到一個特定的臨界點,可以證明行波解的存在性。而雙穩系統行波速度的唯一性也將透過這篇論文得到證明。

關鍵字

變分 行波 反應擴散方程式 雙穩 平移

並列摘要


In this essay, we find a variational structure of the bistable equation. We will show the existence of traveling wave solution by finding a critical point. The uniqueness of the speed of the bistable system is also obtained in this essay.

參考文獻


1. Joel Smoller.
Shock waves and reaction-diffusion equations, second edition, 1994, Springer-Verlag.
2. Aizik I. Volpert, Vitaly A. Volpert, Vladimir A. Volpert.
Traveling wave solutions of parabolic systems, 1991. Translation of Mathematical Monographs Vol 140, AMS.
Linear vs. Nonlinear selection for the propagation speed of the solutions of scalar reaction-diffusion equations invading an unstable equilibrium. CPAM, vol 57, 2004.

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