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The Raℜa operator in ideal topological spaces


WADEI FARIS AL-OMERI, MOHD. SALMI MD. NOORANI, T. NOIRI, A. AL-OMARI


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abs_cmi_2016_25_1-10v1

Given a topological space (X, τ) an ideal I on X and A ⊆ X, the concept of a-local function is defined as follows Aa ∗ (I, τ) = {x ∈X : U ∩ A /∈ I, for every U ∈ τ a(x)}. In this paper a new type of space has been introduced with the help of a-open sets and the ideal topological space called a-ideal space. We introduce an operator