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Universitas Scientiarum

Print version ISSN 0122-7483


GHOUR, Samer Al; MANSUR, Kafa  and  SALCEDO-REYES, Juan Carlos. Between Open Sets and Semi-Open Sets. Univ. Sci. [online]. 2018, vol.23, n.1, pp.9-20. ISSN 0122-7483.

We introduce and investigate ω s-open sets as a new class of sets which lies strictly between open sets and semi-open sets. Then we use ω s-open sets to introduce ω s-continuous functions as a new class of functions between continuous functions and semi-continuous functions. We give several results and examples regarding our new concepts. In particular, we obtain some characterizations of ω s-continuous functions.

Keywords : Semi-open set; ω-open set; Semi-continuous function.

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