참고문헌
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B.H. Kang, An introduction to
${\epsilon}_0$ -density and${\epsilon}_0$ -dense ace, J. Chungcheong Math. Soc., 32 (2019), no. 1, 69-86. https://doi.org/10.14403/JCMS.2019.32.1.69 - S. Modak and A.A. Al-omari, Generalized closed sets in binary ideal topological spaces, J. Chungcheong Math. Soc., 31 (2018), no. 1, 183-191. https://doi.org/10.14403/jcms.2018.31.1.183
- M.B. Prabhakar, S.K. Vali, and M.S. Rao, Closed and dense elements of BE-algebras, J. Chungcheong Math. Soc., 32, no. 1 (2019), 53-67. https://doi.org/10.14403/JCMS.2019.32.1.53