• ON INFRA TOPOLOGICAL SPACES

ADEL. M. AL-ODHARI*

Abstract


In this paper we introduced and investigate infra-topological spaces which deduced from topological spaces and studies the properties of subsets of infra  topological spaces such as infra topological space, infra derived set, infra-interior set , infra-closure set, infra-exterior set and infra-boundary set.


Keywords


infra - topological space, infra -derived set, infra- interior point, infra- closure, infra-exterior point and infra-boundary set.

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