Resumen
The aims of this paper is to introduce new approach of separate sets, disconnected sets and connected sets called a- t-separate sets, a- t-disconnected sets and a- t-connected sets of topological spaces with the help of a-open and a-closed sets. On the basis of new introduce approach, some relationship of a- t-disconnected and a- t-connected set with a- t-separate sets have been investigated thoroughly.