Chhapikul MIAH, Md. Monirul ISLAM, Shyamapada MODAK, Sukalyan MİSTRY
Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics
870-883
$\sigma$-topological space, $()^{*\sigma}$-operator, $\psi_{\sigma}$-operator, $\sigma$-compatible, $\psi_{\sigma}$-C set