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arXiv 1602.01946math.AP
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线性拟抛物方程的瞬时爆破与整体适定性和渐近性

Instantaneous blow-up versus global well-posedness and asymptotic behavior for linear pseudoparabolic equations

Sujin Khomrutai

摘要:

研究了系数为无界且含时的线性拟抛物方程。我们解决的情况下,一直保持开放,在最近的几项研究中的pseudo抛物方程的无界和时间依赖系数。本文得到了一个判别解存在或不存在的严格条件。给出了初始函数和系数的条件,使得每个非平凡正解都瞬时爆破。当系数和初始函数不增长太快时,我们建立了整体解的存在性和唯一性,对于时间无关和时间相关的潜力。这是通过分析贝塞尔卷积乘法算子来完成的。建立了渐近性态和比较原理。整体适定性结果可以推广到对流方程。

英文摘要:

We study linear pseudoparabolic equations with unbounded and time-dependent coefficients. We solve the case which has remained open in several recent studies of pseudoparabolic equations with unbounded and time-dependent coefficients. In this work we get a sharp condition for the existence or non-existence of solutions. Conditions on the initial function and coefficient are provided so that every nontrivial positive solution blows up instantaneously. When the coefficient and the initial function do not grow too rapidly, we establish the existence and uniqueness of global solutions, for both time-independent and time-dependent potentials. This is done via the analysis of the Bessel convolution multiplication operators. Asymptotic behavior and comparison principles are also established. The global well-posedness results can be extended to the equation with convection.

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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