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λ-R_0

Last-modified: 2011-12-27 (火) 22:47:17

Definition Edit

  • A topological space (X, τ) is said to be a λ-R_0 space if every λ-open set contains the λ-closure of each of its singletons.

Property Edit

Reference Edit

  • Caldas Miguel, Jafari Saeid, On some low separation axioms via λ-open and λ-closure operator., Rend. Circ. Mat. Palermo (2) 54 (2005), no. 2, 195–208.