Abstract:

The concepts of relative L-closure operator and relative T₀ closure space were introduced in L-closure spaces. Some
 properties of them were discussed. It was proved that the heredity, the productivity  and L-good extension of separation are all valid. Finally, the relation beween T₀ separation and relative T₀  L-closure space separation was investigated.

Key words: L-closure spaces, relative L-closure operator, relative T₀ closure space, molecule