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arXiv 1302.1650math.AP
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分数BV空间及其在标量守恒律中的应用

Fractional BV spaces and first applications to scalar conservation laws

Christian Bourdarias, Marguerite Gisclon, Stéphane Junca

摘要:

本文的目的是得到非线性标量守恒律熵解的新的精细性质。为此目的,我们研究一些“分数$BV$空间”表示$BV^s$,为$0 < s \leq 1$,介绍了爱和年轻的1937年。$BV^s(\R)$空间非常接近临界索伯列夫空间$W^{s,1/s}(\R)$。我们调查这些空间与一维标量守恒律。$BV^s$空间允许使用比BV函数更少的正则函数,并且在此上下文中看起来更自然。我们得到了一个稳定性结果的熵解与$BV^s$初始数据。此外,我们还首次得到了P. - L.狮子湾Perthame和E.所有非线性退化凸通量的Tadmor。

英文摘要:

The aim of this paper is to obtain new fine properties of entropy solutions of nonlinear scalar conservation laws. For this purpose, we study some "fractional $BV$ spaces" denoted $BV^s$, for $0 < s \leq 1$, introduced by Love and Young in 1937. The $BV^s(\R)$ spaces are very closed to the critical Sobolev space $W^{s,1/s}(\R)$. We investigate these spaces in relation with one-dimensional scalar conservation laws. $BV^s$ spaces allow to work with less regular functions than BV functions and appear to be more natural in this context. We obtain a stability result for entropy solutions with $BV^s$ initial data. Furthermore, for the first time we get the maximal $W^{s,p}$ smoothing effect conjectured by P.-L. Lions, B. Perthame and E. Tadmor for all nonlinear degenerate convex fluxes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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