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首页> 外文期刊>Journal of Functional Analysis >Weakly elliptic systems with obstacle constraints - III. Complex eigenvalues and singular systems
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Weakly elliptic systems with obstacle constraints - III. Complex eigenvalues and singular systems

机译:具有障碍约束的弱椭圆系统-III。复杂特征值和奇异系统

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摘要

Using traditional methods, especially that of eigenfunction expansions combined with the penalty method, sharp conditions are given for the existence of solutions to general weakly elliptic linear N x N second order systems subjected to obstacle type constraints. The result applies to systems with defining coefficient matrices A and B having complex eigenvalues as well as to the case of singular systems-a situation not well treated in the literature. These conditions are placed on the matrix pencil A lambda - B. The effectiveness of the result is then tested on some examples, first in control theory and then for the systems that arise in Part II of this series (D. R. Adams, 2000, J. Geom. Anal. 10. 375-412). (C) 2000 Academic Press. [References: 7]
机译:使用传统方法,特别是本征函数展开方法与惩罚方法相结合,为存在弱类型约束的一般弱椭圆线性N x N二阶系统的解的存在给出了清晰的条件。结果适用于定义具有复杂特征值的系数矩阵A和B的系统,以及适用于奇异系统的情况-这种情况在文献中并未得到很好的处理。这些条件放在矩阵Aλ-B上。然后在一些示例上测试结果的有效性,首先是在控制理论中,然后是本系列第二部分中提出的系统(DR Adams,2000,J. Geom。Anal。10. 375-412)。 (C)2000学术出版社。 [参考:7]

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