2001 · 38 citations · 16 references
Natural SciencesMathematicsSet TheoryTopologyGeneral TopologyMetric SpacesTopological SpacesOpen Sets
In this paper, we apply the notion of α-open sets in topological spaces to present and study contra-α-continuity as a new generalization of contra-continuity (Dontchev, 1996).
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Semi-Open Sets and Semi-Continuity in Topological Spaces
Norman Levine · American Mathematical Monthly · 1963 · 1.3K citations
On some classes of nearly open sets
Olav Njåstad · Pacific Journal of Mathematics · 1965 · 1.1K citations · Full text
Mary Ellen Rudin, Lynn Arthur Steen, J. Arthur Seebach · American Mathematical Monthly · 1971 · 667 citations · Full text
N. V. Veličko · Medical Entomology and Zoology · 1966 · 456 citations