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Existence of solutions with moving singularities for a semilinear heat equation with a critical exponent
Journal de Mathématiques Pures et Appliquées ( IF 2.3 ) Pub Date : 2021-02-18 , DOI: 10.1016/j.matpur.2021.02.007 Jin Takahashi
中文翻译:
具有临界指数的半线性热方程的运动奇点解的存在性。
更新日期:2021-03-02
Journal de Mathématiques Pures et Appliquées ( IF 2.3 ) Pub Date : 2021-02-18 , DOI: 10.1016/j.matpur.2021.02.007 Jin Takahashi
We consider nonnegative solutions of a semilinear heat equation in () with and a nonnegative initial data which has a singularity at . We prove that there exists such that, for any with and , the problem admits a nonnegative solution for some with an explicit singular leading term for each as . Our result refines known counter examples for the uniqueness of the doubly critical case in view of pointwise behavior and complements known sufficient conditions on p for the existence of solutions with moving singularities.
中文翻译:
具有临界指数的半线性热方程的运动奇点解的存在性。
我们考虑半线性热方程的非负解 在 () 和 和非负初始数据 在 。我们证明存在 这样,对于任何 和 和 ,问题允许采用非负解 对于一些 每个词都有一个明确的单数前置词 作为 。考虑到逐点行为,我们的结果针对双临界情况的唯一性改进了已知的反例,并补充了p上已知的充分条件,以解决运动奇异性的存在。