arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/0608578math.AP
收藏

分数阶索伯列夫空间的仿射变形及其在Navier-Stokes方程组中的应用

Affine Variant of Fractional Sobolev Space with Application to Navier-Stokes System

Jie Xiao

摘要:

证明了对于$α\in (0,1)$,$Q_α(\rn)$不仅作为$W^{1,n}(\rn)$和$BMO(\rn)$的中间空间,而且作为索伯列夫空间$\dot{L}^{2}_α(\rn)$的仿射变体,严格嵌入在$L^{\frac{2n}{n-2α}}(\rn)$中,在分数阶微分下同构于二次Morrey空间.同时,利用点积$\nabla\cdot\big(Q_α(\rn)\big)^n$方法,在$\bn=(0,\infty)\times\rn$中得到了不可压Navier-Stokes方程组标度不变温和解的适定性.

英文摘要:

It is proved that for $α\in (0,1)$, $Q_α(\rn)$, not only as an intermediate space of $W^{1,n}(\rn)$ and $BMO(\rn)$ but also as an affine variant of Sobolev space $\dot{L}^{2}_α(\rn)$ which is sharply imbedded in $L^{\frac{2n}{n-2α}}(\rn)$, is isomorphic to a quadratic Morrey space under fractional differentiation. At the same time, the dot product $\nabla\cdot\big(Q_α(\rn)\big)^n$ is applied to derive the well-posedness of the scaling invariant mild solutions of the incompressible Navier-Stokes system in $\bn=(0,\infty)\times\rn$.

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。

↑