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研究了定义在线性空间X上的线性关系A中升标p和降标q的代数性质,主要讨论了使得p=q及X=ranA~p⊕ker A~p成立的条件. 相似文献
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Completeness of the system of eigenvectors of off-diagonal operator matrices and its applications in elasticity theory
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This paper deals with off-diagonal operator matrices and their applications in elasticity theory.Two kinds of completeness of the system of eigenvectors are proven,in terms of those of the compositions of two block operators in the off-diagonal operator matrices.Using these results,the double eigenfunction expansion method for solving upper triangular matrix differential systems is proposed.Moreover,we apply the method to the two-dimensional elasticity problem and the problem of bending of rectangular thin plates on elastic foundation. 相似文献
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利用算子分块方法研究了具有一般定义域的形式Hamilton算子的可逆性和可逆补,还进一步给出了无穷维Hamilton算子的相关结论. 相似文献
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本文对无穷维Hamilton算子的谱理论及相关问题的研究情况做一综述,内容包括无穷维Hamilton算子的特征展开定理、谱理论、可逆性和可逆补等.本文还提出了一些待解决的问题. 相似文献