Abstract:
The first part of the survey describes the fundamental results in the theory of multivalued mappings, obtained during the period 1981–1986. The survey contains a description of fixed-point and coincidence theorems for various classes of multivalued mappings, generalizing a series of classical results. Results on the theory of the topological degree of multivalued mappings are also given.
Citation:
Yu. G. Borisovich, B. D. Gel'man, A. D. Myshkis, V. V. Obukhovskii, “New results in the theory of multivalued mappings. I. Topological characteristics and solvability of operator relations”, Itogi Nauki i Tekhn. Ser. Mat. Anal., 25, VINITI, Moscow, 1987, 123–197; J. Soviet Math., 49:1 (1990), 800–855