On minimal and maximal T1-space via Β*c-open set

الملخص EN

In this paper, we introduced study about properties of the spaces minimal T1 – Space and maximal T1 – space by using the set open (respace β - open, Β* c– open) sets and we concluded some propositions, remarks and relations between spaces m Β* c – T1 space and M Β * c – T1 space and study the relation between m – space and M – space to space T1 – space.

Where we find every m Β* c – T1 space is M Β* c – T1 space, but the converse is not true in general.

Also we introduced hereditary properties and topological properties.