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SINGULAR BACKWARD SELF-SIMILAR SOLUTIONS OF A SEMILINEAR PARABOLIC EQUATION

机译:半线性抛物方程的奇异向后自相似解

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摘要

We consider a parabolic partial differential equation with power nonlinearity. Our concern is the existence of a singular solution whose singularity becomes anomalous in finite time. First we study the structure of singular radial solutions for an equation derived by backward self-similar variables. Using this, we obtain a singular backward self-similar solution whose singularity becomes stronger or weaker than that of a singular steady state.
机译:我们考虑具有功率非线性的抛物型偏微分方程。我们关注的是奇异解的存在,其奇异性在有限的时间内变得异常。首先,我们研究由后向自相似变量导出的方程的奇异径向解的结构。使用此方法,我们获得了奇异的向后自相似解,其奇异性比奇异稳态变得更强或更弱。

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