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were introduced by Császár to
provide a unified approach to topology, proximity, and uniformity.
At least four closure operators associated with a semitopogenous
order have been introduced by various authors. We provide a
systematic comparison of these closure operators. Examples are
presented to show their relative dependence and independence.
Key Words: Semitopogenous order, closure operator, topology, connected closure space.
2020 Mathematics Subject Classification: Primary 54A05; Secondary 54A15, 54A10.
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