EMIS ELibM Electronic Journals PUBLICATIONS DE L'INSTITUT MATHÉMATIQUE (BEOGRAD) (N.S.)
Vol. 69(83), pp. 51--58 (2001)

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ON COMMUTING GENERALIZED INVERSES OF MATRICES AND IN ASSOCIATIVE RINGS

Jovan Ke\v cki\'c

Abstract: We obtain explicit solutions of certain systems of matrix equations which define commuting generalized inverses. It is proved that the only possible generalized inverse defined by (4) is the Drazin inverse. On the other hand, the system (18) defines the generalized inverses, which may differ from the Drazin inverse. Examples are given in order to show how the obtained results can be extended to associative rings.

Classification (MSC2000): 15A09

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Electronic fulltext finalized on: 5 Feb 2002. This page was last modified: 5 Feb 2002.

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