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Encyclopedia of Separation Axioms Wiki*
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pre-D_2 をテンプレートにして作成
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*Definition [#h28ed510]
-A topological space (X,τ) is called pre-D_2 if for any distinct pair of points x and y of X , there exists disjoint [[pD-sets>pre-Difference set]] &ref(http://www.eaflux.com/imgtex/imgtex.fcgi?%5bres=100%5d%7b%5c%5b%20U%5cmbox%7b%20and%20%
*Property [#e279378d]
-If (X,τ) is pre-D_2, then it is [[pre-D_1]].
*Reference [#r20450c2]
-Caldas, M.; Georgiou, D. N.; Jafari, S. , ''Characterizations of low separation axioms via α-open sets and α-closure operator.'', (English summary) Bol. Soc. Parana. Mat. (3) 21 (2003), no. 1-2, 97–111.
終了行:
*Definition [#h28ed510]
-A topological space (X,τ) is called pre-D_2 if for any distinct pair of points x and y of X , there exists disjoint [[pD-sets>pre-Difference set]] &ref(http://www.eaflux.com/imgtex/imgtex.fcgi?%5bres=100%5d%7b%5c%5b%20U%5cmbox%7b%20and%20%
*Property [#e279378d]
-If (X,τ) is pre-D_2, then it is [[pre-D_1]].
*Reference [#r20450c2]
-Caldas, M.; Georgiou, D. N.; Jafari, S. , ''Characterizations of low separation axioms via α-open sets and α-closure operator.'', (English summary) Bol. Soc. Parana. Mat. (3) 21 (2003), no. 1-2, 97–111.
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