On <i>M</i>-Asymmetric Irresolute Multifunctions in Bitopological Spaces
- 1 Department of Mathematics and Statistics, Mulungushi University, Kabwe, Zambia
- 2 Department of Mathematics and Statistics, Rusangu University, Monze, Zambia
- 3 Department of Mathematics and Statistics, Rusangu University, Monze, Zambia
Abstract
In this paper, our focus is to introduce and investigate a class of mappings called M- asymmetric irresolute multifunctions defined between bitopological structural sets satisfying certain minimal properties. M -asymmetric irresolute multifunctions are point-to-set mappings defined using M -asymmetric semiopen and semiclosed sets. Some relations between M -asymmetric semicontinuous multifunctions and M -asymmetric irresolute multifunctions are established. This notion of M -asymmetric irresolute multifunctions is analog to that of irresolute multifunctions in the general topological space and, upper and lower M -asymmetric irresolute multifunctions in minimal bitopological spaces, but mathematically behaves differently.
- Popa, V. (1990) Irresolute Multifunctions. International Journal of Mathematics and Mathematical Sciences, 13, 275-280. https://doi.org/10.1155/S0161171290000400
- Matindih, L.K., Moyo, E., Manyika, D.K. and Sinyangwe, T. (2021) Some Results of Upper and Lower M-Asymmetric Irresolute Multifunctions in Bitopological Spaces. Advances in Pure Mathematics, 11, 611-627. https://doi.org/10.4236/apm.2021.116040
- Crossley, G.S. and Hildebrand, S. (1972) Semi-Topological Properties. Fundamenta Mathematicae, 74, 233-255. https://doi.org/10.4064/fm-74-3-233-254
- Levine, N. (1963) Semi-Open Sets and Semi-Continuity in Topological Spaces. The American Mathematical Monthly, 70, 36-41. https://doi.org/10.1080/00029890.1963.11990039
- Maheshwari, S.N. and Prasad, R. (1977) Semi-Open Sets and Semi-Continuous Function in Bitopological Spaces. Mathematical Notes, 26, 29-37.
- Popa, V. (1975) Multifunctions and Bitopological Spaces. Bulletin mathématique de la Société des Sciences Mathématiques de la République Socialiste de Roumanie, 19, 147-152.
- Maki, H., Rao, K.C. and Gani, A.N. (1999) On Generalizing Semi-Open Sets and Preopen Sets. Pure and Applied Mathematika Sciences, 49, 17-30.
- Popa, V. and Noiri, T. (2000) On M-Continuous Functions. Annals of the University Dunarea de Jos of Galat, 18, 31-41. https://doi.org/10.2307/44152301
- Matindih, L.K. and Moyo, E. (2021) On M-Asymmetric Semi-Open Sets and Semicontinuous Multifunctions in Bitopological Spaces. Advances in Pure Mathematics, 11, 218-236. https://doi.org/10.4236/apm.2021.114016
- Bose, S. (1981) Semi Open Sets, Semi-Continuity and Semi-Open Mappings in Bitopological Spaces. Bulletin of the Calcutta Mathematical Society, 73, 237-246.
- Berge, C. (1963) Topological Spaces: Including a Treatment of Multi-Valued Functions, Vector Spaces and Convexity. Oliver and Boyd Ltd., Edinburgh and London.
- Noiri, T. and Popa, V. (2000) On Upper and Lower M-Continuous Multifunctions. Filomat, 14, 73-86.
- Ewert, J. and Lipski, T. (1983) Quasi-Continuous Multivalued Mappings. Mathematica Slovaca, 33, 69-74.
- Popa, V. (1988) On Characterizations of Irresolute Multifunctions. Journal of the University of Kuwait (Science), 15, 21-26.
- Kelly, J.C. (1963) Bitopological Spaces. Proceedings of the London Mathematical Society, 3, 71-89. https://doi.org/10.1112/plms/s3-13.1.71