B M Uzzal Afsan
(Chungcheong Mathematical Society, 2020-05)
In this paper, we have introduced a new type of covering property $\beta_{(\omega_r,s)}^t$-closedness, stronger than $P_{(\omega_r,s)}^t$-closedness \cite{afsan2} in terms of $(r,s)$-$\beta$-open sets \cite{khed} and ...