On the wave equation with multiplicities and space-dependent irregular coefficients
On the wave equation with multiplicities and space-dependent irregular coefficients
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关于具有多重性和空间相关的不规则系数的波动方程
DOI:
10.1090/tran/8319
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发表时间:
2020
影响因子:
1.3
通讯作者:
Claudia Garetto
中科院分区:
文献类型:
--
作者:
Claudia Garetto
In this paper we study the well-posedness of the Cauchy problem for a wave equation with multiplicities and space-dependent irregular coefficients. As in \cite{GR:14} in order to give a meaningful notion of solution, we employ the notion of very weak solution, which construction is based on a parameter dependent regularisation of the coefficients via mollifiers. We prove that, even with distributional coefficients, a very weak solution exists for our Cauchy problem and it converges to the classical one when the coefficients are smooth. The dependence on the mollifiers of very weak solutions is investigated at the end of the paper in some instructive examples.
影响因子:
1.3
作者:
Garetto C
通讯作者:
Garetto C
影响因子:
2.5
作者:
Garetto C
通讯作者:
Garetto C
影响因子:
1.4
作者:
Garetto C
通讯作者:
Garetto C