文章基本信息

标题：On polynomial <mml:math alttext="${\rm EP}_r$" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>EP</mml:mtext></mml:mrow><mml:mi>r</mml:mi></mml:msub></mml:mrow></mml:math> matrices
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作者：Ar. Meenakshi ; N. Anandam
期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：1992
卷号：15
DOI：10.1155/S0161171292000334
出版社：Hindawi Publishing Corporation
摘要：This paper gives a characterization of EPr-λ-matrices. Necessary and sufficient conditions are determined for (i) the Moore-Penrose inverse of an EPr-λ-matrix to be an EPr-λ-matrix and (ii) Moore-Penrose inverse of the product of EPr-λ-matrices to be an EPr-λ-matrix. Further, a condition for the generalized inverse of the product of λ-matrices to be a λ-matrix is determined.