Continuity results for degenerate diffusion equations with $L^{p}_t L^{q}_{x}$ drifts

Continuity results for degenerate diffusion equations with $L^{p}_t L^{q}_{x}$ drifts
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具有 $L^{p}_t L^{q}_{x}$ 漂移的简并扩散方程的连续性结果

DOI:
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
Y. Zhang
Y. Zhang
中科院分区:
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文献类型:
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作者:
Sukjung Hwang;Y. Zhang

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本文研究了退化扩散漂移方程[ u_{t} = Delta u^{m} + ablacdot left(B(x,t),u 八),四 ext{for } m geq 1 ]假设L^{p}_t L^{q}_{x}$中的向量场$B。关于局部保持器连续性,我们提供了一个尖锐的条件$p$和$q$,这被称为亚临界区域。在临界区域中,无发散条件是提供一致连续性的必要条件,而一致连续性取决于$B$的模连续性。
In this paper, we study local uniform continuity of nonnegative weak solutions to degenerate diffusion-drift equations in the form [ u_{t} = Delta u^{m} + ablacdot left( B (x,t) , u ight), quad ext{for } m geq 1 ] assuming a vector field $B in L^{p}_t L^{q}_{x}$. Regarding local Holder continuity, we provide a sharp condition on $p$ and $q$, which is referred to as the subcritical region. In the critical region, the divergence-free condition is essential to providing uniform continuity which depends on the modulus continuity of $B$.
DOI: 10.1073/pnas.0406724102
发表时间: 2005-02-15
影响因子: 11.1
作者:
Tuval, I;Cisneros, L;Goldstein, RE
通讯作者: Goldstein, RE