Cellina, Arrigo Approximation of set valued functions and fixed point theorems. (English) Zbl 0187.07701 Ann. Mat. Pura Appl., IV. Ser. 82, 17-24 (1969). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 39 Documents MSC: 54C60 Set-valued maps in general topology 54H25 Fixed-point and coincidence theorems (topological aspects) Keywords:functional analysis PDF BibTeX XML Cite \textit{A. Cellina}, Ann. Mat. Pura Appl. (4) 82, 17--24 (1969; Zbl 0187.07701) Full Text: DOI OpenURL References: [1] Berge, C., Espaces topologiques, fonctions multivoques (1966), Paris: Dunod, Paris · Zbl 0164.52902 [2] Filippov, A. F., On certain questions in the theory of optimal control, SIAM J. Control, 1, 54-59 (1962) · Zbl 0139.05102 [3] Katutani, S., A generalization of Brouwer’s fixed point Theorem, Duke Mat. J., 8, 457-459 (1961) · Zbl 0061.40304 [4] Michael, E., Continuous selections, Ann. Math., 63, 361-382 (1956) · Zbl 0071.15902 [5] J. von Neumann,On rings of operators. Reduction theory., Ann. Math., 50 (1949). · Zbl 0034.06102 [6] Olech, C., A note concerning set-valued measurable functions, Bull Acad. Pol. Sci., série sci. Math., Astr., Phys., 13, 317-321 (1964) · Zbl 0145.28302 [7] Wazewski, T., Sur une condition d’existence des fonctions implicites mesurables, Bull. Acad. Pol. Sci, série sci. Math, Astr., Phys., 9, 861-863 (1961) · Zbl 0101.04302 This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. It attempts to reflect the references listed in the original paper as accurately as possible without claiming the completeness or perfect precision of the matching.