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arXiv 0902.0390math.AP
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具有部分BMO系数的散度型抛物和椭圆方程组

Parabolic and elliptic systems in divergence form with variably partially BMO coefficients

Hongjie Dong, Doyoon Kim

摘要:

在索伯列夫空间中建立了二阶发散型抛物方程组的可解性。假设首项系数仅在每个小抛物柱面上的一个空间方向上可测量,空间方向允许取决于柱面。在其他正交方向和时间变量的系数有局部小的平均振荡。我们还得到了相应的散度型二阶椭圆型方程组的$W^1_p$ -可解性.我们的结果是新的,甚至对标量方程,证明简化了以前在[12]中使用的方法

英文摘要:

We establish the solvability of second order divergence type parabolic systems in Sobolev spaces. The leading coefficients are assumed to be only measurable in one spatial direction on each small parabolic cylinder with the spatial direction allowed to depend on the cylinder. In the other orthogonal directions and the time variable the coefficients have locally small mean oscillations. We also obtain the corresponding $W^1_p$-solvability of second order elliptic systems in divergence form. Our results are new even for scalar equations and the proofs simplify the methods used previously in [12]

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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