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arXiv 2301.00804math.AP
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强迫Euler方程的Onsager指数以上的凸积分

Convex integration above the Onsager exponent for the forced Euler equations

Aynur Bulut, Manh Khang Huynh, Stan Palasek

摘要:

我们建立了$\mathbb{T}^{d}$ $(d\geq3)$上带外力的Euler方程的新的非唯一性结果。通过引入一种新的交替凸积分格式,我们构造了具有正则性$\frac{1}{2}-$的非唯一、几乎处处光滑的Hölder连续解,该解明显高于$\frac{1}{3}$的Onsager阈值.我们构建的解决方案显着不同的性质,从那些所产生的最近不稳定的涡流建设Vishik,特别是,我们的解决方案是真正的$d$维($d\geq3$),并给出任何光滑的数据的非唯一性结果。据我们所知,这是昂萨格指数以上的凸积分构造的第一个实例。

英文摘要:

We establish new non-uniqueness results for the Euler equations with external force on $\mathbb{T}^{d}$ $(d\geq3)$. By introducing a novel alternating convex integration scheme, we construct non-unique, almost-everywhere smooth, Hölder-continuous solutions with regularity $\frac{1}{2}-$, which is notably above the Onsager threshold of $\frac{1}{3}$. The solutions we construct differ significantly in nature from those which arise from the recent unstable vortex construction of Vishik; in particular, our solutions are genuinely $d$-dimensional ($d\geq3$), and give non-uniqueness results for any smooth data. To the best of our knowledge, this is the first instance of a convex integration construction above the Onsager exponent.

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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