“…The classes { a − }, { a = }, and { } denote the class of all g-inverses, outer inverses and reflexive g-inverses of a , respectively. For basic notions of generalized inverses in the context of matrices we refer the readers to 14 , 15 , and 16 .…”
The reverse order law for outer inverses and the Moore-Penrose inverse is discussed in the context of associative rings. A class of pairs of outer inverses that satisfy reverse order law is determined. The notions of left-star and right-star orders have been extended to the case of arbitrary associative rings with involution and many of their interesting properties are explored. The distinct behavior of projectors in association with the star, right-star, and left-star partial orders led to several equivalent conditions for the reverse order law for the Moore-Penrose inverse.
“…The classes { a − }, { a = }, and { } denote the class of all g-inverses, outer inverses and reflexive g-inverses of a , respectively. For basic notions of generalized inverses in the context of matrices we refer the readers to 14 , 15 , and 16 .…”
The reverse order law for outer inverses and the Moore-Penrose inverse is discussed in the context of associative rings. A class of pairs of outer inverses that satisfy reverse order law is determined. The notions of left-star and right-star orders have been extended to the case of arbitrary associative rings with involution and many of their interesting properties are explored. The distinct behavior of projectors in association with the star, right-star, and left-star partial orders led to several equivalent conditions for the reverse order law for the Moore-Penrose inverse.
<abstract><p>By using the ranks of the generalized Schur complement, the equivalent conditions for reverse order laws of the $ \{1, 3M\}- $ and the $ \{1, 4N\}- $ inverses of the multiple product of matrices are derived.</p></abstract>
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