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Monotone matrix maps and Skolem-Noether theorem. (English. Russian original) Zbl 1271.15020
Mosc. Univ. Math. Bull. 67, No. 5-6, 221-223 (2012); translation from Vestn. Mosk. Univ., Ser. I 67, No. 5, 46-49 (2012).
Summary: Monotone matrix maps induced by a group inverse are considered. The characterization is given in additive and continuous cases. The ring version of the Skolem-Noether theorem is obtained. A series of examples of nonlinear monotone maps is presented.
##### MSC:
 15B48 Positive matrices and their generalizations; cones of matrices 15A09 Theory of matrix inversion and generalized inverses
##### Keywords:
monotone matrix maps; group inverse; Skolem-Noether theorem
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##### References:
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