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Last-modified: 2011-12-27 (火) 20:00:24

Definition Edit

  • A topological space (X,τ) is said to be λ-D_2 if for any x, y ∈ X such that imgtex.fcgi?%5bres=100%5d%7b%5c%5b%20x%5cneq%20y%20%5c%5d%7d%25.png there
    exist disjoint λ-D-sets G and E such that x ∈ G and y ∈ E.

Property Edit

Reference Edit

  • Caldas Miguel, Jafari Saeid, Navalagi Govindappa, More on λ-closed sets in topological spaces.,Rev. Colombiana Mat. 41 (2007), no. 2, 355-369.