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Quelques remarques sur la quasi-continuit√© des multifonctions. (Some remarks on the quasicontinuity of multifunctions). (French) Zbl 0636.54019
The paper is concerned with a generalization of quasicontinuity for multifunctions. The author extends to this type of continuity a classical result by M. K. Fort on the set of the points at which a multifunction is not upper (lower) semicontinuous.
Reviewer: M.B.Lignola

54C60 Set-valued maps in general topology
54C08 Weak and generalized continuity
Full Text: EuDML
[1] EWERT J.: On points of lower and upper quasi-continuity of multivalued maps. Math. Slovaca · Zbl 0637.54016
[2] FORT M. K.: Points of continuity of semicontinuous functions. Publ. Math. Debrecen, 2, 1951, 100-102. · Zbl 0044.05703
[3] KURATOWSKI C.: Topologie I. Warszawa 1952. · JFM 59.0563.02
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