Fuzzy accumulation points and convergence of molecular net

The concepts of accumulation points and derived sets of L-fuzzy sets are introduced and systematically discussed. Several important results, such as d(A V B)=d(A) V d(B), A^- = A v A^d etc., are given. In order to investigate T₂ separation property and fuzzy compactness in a LFT, we introduce the concept of c-convergence of molecular net and study its properties. (L^X, δ) is a fuzzy T₂ -space iff the limit is unique for every convergence molecular net proved.