Application on local discrete expansion
Summary: The process of changing a topology by some types of its local discrete expansion preserves \(s\)-closedness, \(S\)-closedness, semi-compactness, semi-\(T_i\), semi-\(R_i\), \(i\in\{ 0, 1, 2\}\), and extremely disconnectedness. Via some other forms of such above replacements one can have topologies which satisfy separation axioms the original topology does not have.
scientific article; zbMATH DE number 930052