ξ-CLOSED SETS IN TOPOLOGICAL SPACES AND DIGITAL PLANES
キーワード:
generalized closed sets,
g∗-closed sets,
α-closed sets,
gα-closed sets,
gα∗-closed sets,
gα∗∗-closed sets,
ξ-closed sets,
ξ∗-closed sets,
ξ∗∗-closed sets,
preclosed sets,
digital lines,
digital planes,
T1/2-spaces,
Tξ-spaces
2006 年 64 巻 3 号 p. 533-549
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