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arXiv 2103.02344math.AP
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带Hessian非线性项的高阶抛物型方程的显式爆破解

Explicit blowing up solutions for a higher order parabolic equation with Hessian nonlinearity

Carlos Escudero

AI总结:

本文针对一类带Hessian非线性项、作为外延生长模型的高阶抛物型方程,通过构造多区域显式解分析其爆破行为,改进了爆破准则,同时指出现有先验估计类准则无法完全反映显式解的奇异性。

摘要:

本文研究了一类被提出作为外延生长模型的非线性高阶抛物型偏微分方程。该方程既存在全局时间解,也存在有限时间爆破解,其爆破由方程的Hessian非线性项介导。本文通过在正方形、圆盘和平面上构造显式解,进一步分析了方程的爆破行为,其中部分解在有限或无限时间内发生完全爆破。最后,本文改进了针对该演化方程已被证明的爆破准则。不过,现有基于先验估计的爆破准则并不能完全反映这些显式爆破解的奇异性特征。

英文摘要:

In this work we consider a nonlinear parabolic higher order partial differential equation that has been proposed as a model for epitaxial growth. This equation possesses both global-in-time solutions and solutions that blow up in finite time, for which this blow-up is mediated by its Hessian nonlinearity. Herein, we further analyze its blow-up behaviour by means of the construction of explicit solutions in the square, the disc, and the plane. Some of these solutions show complete blow-up in either finite or infinite time. Finally, we refine a blow-up criterium that was proved for this evolution equation. Still, existent blow-up criteria based on a priori estimates do not completely reflect the singular character of these explicit blowing up solutions.

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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