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arXiv math/0610469math.APmath-phmath.MP
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具有衰减记忆的非局部守恒律的解

Solutions for a Nonlocal Conservation Law with Fading Memory

Gui-Qiang Chen, Cleopatra Christoforou

摘要:

在$BV$中构造了具有衰减记忆的标量非局部守恒律的整体熵解作为粘性消失极限近似解.证明了$BV$中熵解的唯一性和稳定性,并且当初始数据仅存在于$L^\infty$中时,证明了$L^\infty$中熵解的存在性.此外,如果记忆核依赖于一个松弛因子$\de>0$,并倾向于一个δ测度弱作为$\de\to 0+$时的措施,那么在$BV$的整体熵解序列收敛到$BV$的一个可采纳解,相应的局部守恒律。

英文摘要:

Global entropy solutions in $BV$ for a scalar nonlocal conservation law with fading memory are constructed as limits of vanishing viscosity approximate solutions. The uniqueness and stability of entropy solutions in $BV$ are established, which also yield the existence of entropy solutions in $L^\infty$ while the initial data is only in $L^\infty$. Moreover, if the memory kernel depends on a relaxation parameter $\de>0$ and tends to a delta measure weakly as measures when $\de\to 0+$, then the global entropy solution sequence in $BV$ converges to an admissible solution in $BV$ for the corresponding local conservation law.

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