Geodesic
Invertibility of multivalued sublinear operators
Eurasian mathematical journal, Tome 6 (2015) no. 4, pp. 44-58.

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We consider the representation of a compact-valued sublinear operator ($K$-operator) by means of the compact convex packet of single-valued so-called basis selectors. Such representation makes it possible to introduce the concept of an invertible $K$-operator via invertible selectors. The extremal points of direct and inverse selector representations are described, an analogue of the von Neumann theorem is obtained. A series of examples is considered. 
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I. V. Orlov; S. I. Smirnova. Invertibility of multivalued sublinear operators. Eurasian mathematical journal, Tome 6 (2015) no. 4, pp. 44-58. http://geodesic.mathdoc.fr/item/EMJ_2015_6_4_a4/

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