“…Later on it was further investigated from the sequence space point of view and linked with the summability theory by Salat [13], Tripathy and Hazarika [18,19], Tripathy and Mahanta [20], Tripathy and Dutta [17], Tripathy et.al. [23], Savas [15], Savas and Das [14], Kumar [6] and many others. The idea of rough convergence was introduced by Phu [11], who also introduced the concepts of rough limit points and roughness degree.…”