Let $(X, \tau)$ be a topological space and let $A \subseteq X$. Then $Int(Ext(A)) \subseteq Ext(Int(A))$.
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- Int(A) represents the interior of set A, which is the largest open set contained in A. - Ext(A) represents the exterior of set A, which is the interior of the complement of A, i.e., Int(X \ A). - X \ A represents the complement of set A in the topological space Show more…
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