In this note we recall the concept of a singular periodic square matrix, admitting a positive integer power greater than one which is identical to the matrix itself. Characterizations involving the group inverse of a matrix are given and relationships with normal and EP matrices are investigated.


Partial Order Potent Matrice Generalize Inverse Group Matrice Partial Isometry 
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© Physica-Verlag Heidelberg 2009

Authors and Affiliations

  1. 1.Carl von Ossietzky Universität OldenburgFakultät V, Institut für MathematikOldenburgGermany

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