2011
DOI: 10.1080/03081087.2011.558843
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On nonsingularity of combinations of two group invertible matrices and two tripotent matrices

Abstract: Let T 1 and T 2 be two n × n tripotent matrices and c 1 , c 2 two nonzero complex numbers. We mainly study the nonsingularity of combinations T = c 1 T 1 + c 2 T 2 − c 3 T 1 T 2 of two tripotent matrices T 1 and T 2 , and give some formulae for the inverse of c 1 T 1 + c 2 T 2 − c 3 T 1 T 2 under some conditions. Some of these results are given in terms of group invertible matrices.

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Cited by 5 publications
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Let A and B be two group invertible matrices, we study the rank, the nonsingularity and thewhere c 1 , c 2 are nonzero complex numbers. Under some special conditions, the necessary and sufficient conditions of c 1 A + c 2 B + c 3 AB and c 1 A + c 2 B + c 3 AB + c 4 BA to be nonsingular and group invertible are presented, which generalized some related results of Benítez, Liu, Koliha and Zuo [4,17,19,25].
…”
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confidence: 79%
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“…
Let A and B be two group invertible matrices, we study the rank, the nonsingularity and thewhere c 1 , c 2 are nonzero complex numbers. Under some special conditions, the necessary and sufficient conditions of c 1 A + c 2 B + c 3 AB and c 1 A + c 2 B + c 3 AB + c 4 BA to be nonsingular and group invertible are presented, which generalized some related results of Benítez, Liu, Koliha and Zuo [4,17,19,25].
…”
mentioning
confidence: 79%
“…So Theorems 2.12,2.13 are the generalizations of the two Theorems of [4]. Theorem 2.14 is the generalization of Theorem 2.6 of reference [19].…”
Section: )mentioning
confidence: 95%
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