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Some properties of upper and lower θ-quasicontinuous multifunctions

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Języki publikacji
EN
Abstrakty
EN
In this paper we obtain new characterizations of upper and lower θ-quasicontinuous muitifunctions and investigate several properties of such multifunctions.
Wydawca
Rocznik
Strony
223--234
Opis fizyczny
Bibliogr. 28 poz.
Twórcy
autor
autor
  • Department of Mathematics, University of Bacău, 5500 Bacău, Romania, vpopa@ub.ro
Bibliografia
  • [1] M. E. Abd El-Monsef, S. N. El-Deeb and R. A. Mahmoud, ß-open sets and ß-continuous mappings, Bull. Fac. Sci. Assiut Univ. 12 (1983), 77-90.
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  • [7] S. G. Crossley and S. K. Hildebrand, Semi-closure, Texas J. Sci. 22 (1971), 99-112.
  • [8] G. Di Maio and T. Noiri, On s-closed spaces, Indian J. Pure Appl. Math. 18 (1987), 226-233.
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  • [10] S. N. El-Deeb, I. A. Hasanein, A. S. Mashhour and T. Noiri, On p-regular spaces, Bull. Math. Soc. Sci. Math. R. S. Roumanie 27 (75) (1983), 311-315.
  • [11] S. Fomin, Extensions of topological spaces, Ann. of Math. 44 (1943), 471-480 = Dokl. Acad. Nauk S.S.S.R. 32 (1941), 114-116.
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  • [14] N. Levine, Semi-open sets and semi-continuity in topological spaces, Amer. Math. Monthly 70 (1963), 36-41.
  • [15] S. N. Maheshwari and R. Prasad, Some new separation axioms, Ann. Soc. Sci. Bruxelles 89 (1975), 394-402.
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  • [17] A. S. Mashhour, I. A. Hasanein and S. N. El-Deeb, α-continuous and α-open mappings, Acta Math. Hungar. 41 (1983), 213-218.
  • [18] O. Njåstad, On some classes of nearly open sets, Pacific J. Math. 15 (1965), 961-970.
  • [19] T. Noiri, On θ-semi-continuous functions, Indian J. Pure Appl. Math. 21 (1990), 410-415.
  • [20] V. Popa, Multifunctions semi-continues, Rev. Roumaine Math. Pures Appl. 27 (1982), 807-815.
  • [21] V. Popa, Some-properties of H-almost-continuous-multifunctions, Problemy Mat. 10 (1988), 9-26.
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  • [23] V. Popa and T. Noiri, On θ-quasicontinuous multifunctions, Demonstratio Math. 28 (1995), 111-122.
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-PWA3-0012-0023
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