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Last-modified: 2012-10-04 (木) 14:34:10

Definition Edit

  • A topological space (X,τ) is called pre-T_0 iff to each pair of distinct points x, y in X, there exists a pre-open? set containing one of the points but not the other.

Reference Edit

  • Athisaya Ponmani, S.; Lellis Thivagar, M., Another form of separation axioms. , (English) [J] Methods Funct. Anal. Topol. 13, No. 4, 380-385 (2007).