λ-closed

Last-modified: 2011-12-27 (火) 18:55:03

Definition

  • A subset S of a topological space (X,τ) is called a λ-closed if S = L∩F, where L is a Λ-set and F is closed.

Reference

  • Arenas Francisco G., Dontchev Julian, Ganster Maximilian, On λ-sets and the dual of generalized continuity., Questions Answers Gen. Topology 15 (1997), no. 1, 3-13.