Blow-up of solutions to the periodic modified Camassa-Holm equation with varying linear dispersion
Blow-up of solutions to the periodic modified Camassa-Holm equation with varying linear dispersion
复制标题
具有变化线性色散的周期性修正 Camassa-Holm 方程的解的放大
DOI:
10.3934/dcds.2016115
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发表时间:
2016-10
影响因子:
1.1
通讯作者:
Shuanghu Zhang
中科院分区:
文献类型:
--
作者:
Min Zhu;Shuanghu Zhang
Considered herein is the blow-up mechanism to the periodic modified Camassa-Holm equation with varying linear dispersion. We first consider the case when linear dispersion is absent and derive a finite-time blow-up result. The key feature is the ratio between solution and its gradient. Using the continuity of the solutions and the right transformation, we then obtain this blow-up criterion to the case with negative linear dispersion and determine that the finite time blow-up can still occur if the initial momentum density is bounded below by the magnitude of the linear dispersion and the initial datum has a local mild-oscillation region. Finally, we demonstrate that when the linear dispersion is non-negative, formation of singularity can be induced by an initial datum with a sufficiently steep profile.
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