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September/October 2011 Traveling fronts of a conservation law with hyper-dissipation
Jerry L. Bona, Fred B. Weissler
Adv. Differential Equations 16(9/10): 917-935 (September/October 2011).


Studied here are traveling-front solutions $\phi_{\epsilon}(x - {c} t)$ of a conservation law with hyper-dissipation appended. The evolution equation in question is a simple conservation law with a fourth-order dissipative term, namely $$u_t + 2uu_x + {\epsilon} u_{xxxx} = 0 , $$ where ${\epsilon} > 0$. The traveling front is restricted by the asymptotic conditions $\phi_{\epsilon}(x) \to L_\pm$ as $x \to \pm\infty$, where $L_+ < L_-$, and the symmetry condition $\phi_{\epsilon}(x) + \phi_{\epsilon}(-x) = L_- + L_+$ for all $x \in \mathbb R$. Such fronts are shown to exist and proven to be unique. Unlike the corresponding fronts for the Burgers' equation, they do not decay monotonically to their asymptotic states, but oscillate infinitely often around them. Despite this oscillation, it is also shown that $\phi_{\epsilon}(x) \to L_+$ as ${\epsilon} \to 0$, for all $x > 0$, and $\phi_{\epsilon}(x) \to L_-$ as ${\epsilon} \to 0$, for all $x < 0$.


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Jerry L. Bona. Fred B. Weissler. "Traveling fronts of a conservation law with hyper-dissipation." Adv. Differential Equations 16 (9/10) 917 - 935, September/October 2011.


Published: September/October 2011
First available in Project Euclid: 17 December 2012

zbMATH: 1350.35168
MathSciNet: MR2850758


Rights: Copyright © 2011 Khayyam Publishing, Inc.


Vol.16 • No. 9/10 • September/October 2011
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