In this study, we defined the concept of quasi e^*-θ-closed sets by means of e^*-θ-open sets. Depending on this concept, we introduced approximately e^θ-open functions and investigated some of its basic properties. Also, we defined and studied contra pre e^θ-open functions, which are stronger than the approximately e^θ-open functions. Moreover, we characterized the class of e^*θ-T₁/2 spaces.
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Burcu Sünbül Ayhan (2024) studied this question.
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