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arXiv 2008.01272math.AP
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抛物型积分微分方程求解一类特殊Hele-Shaw两相流的正则性

Regularity for a special case of two-phase Hele-Shaw flow via parabolic integro-differential equations

Farhan Abedin, Russell W. Schwab

摘要:

我们建立了平移不变分数阶抛物型积分微分方程的$C^{1,γ}$正则性理论(通过Krylov-Safonov估计),给出了与Hele-Shaw相关的两相自由边界流的特殊情况的解的正则性机制的改进.这种特殊情况是由于对流的自由边界的图形假设和自由边界是空间中的$C^{1,\text{Dini}}$的假设。自由边界则必须立即成为通用$γ$的$C^{1,γ}$,这取决于图的梯度的Dini模。这些结果也适用于同一类型的单相问题。

英文摘要:

We establish that the $C^{1,γ}$ regularity theory for translation invariant fractional order parabolic integro-differential equations (via Krylov-Safonov estimates) gives an improvement of regularity mechanism for solutions to a special case of a two-phase free boundary flow related to Hele-Shaw. The special case is due to both a graph assumption on the free boundary of the flow and an assumption that the free boundary is $C^{1,\text{Dini}}$ in space. The free boundary then must immediately become $C^{1,γ}$ for a universal $γ$ depending upon the Dini modulus of the gradient of the graph. These results also apply to one-phase problems of the same type.

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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