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来源:[J].Mathematica Scandinavica(IF 0.521), 1986, Vol.57 (1), pp.5-28
摘要:... Finally, it is shown that the RE-degree structure of E-closed sets is unchanged on certain forcing extension via "effective" posets.
作者:M Angayarkanni , P Dhanasekaran , A Vadivel
来源:[J].Scientia Magna, 2018, Vol.13 (1), pp.72-79
摘要:In this paper, we define the concept of ∨e-sets (resp. ∧e-sets) of a topological space i.e., the intersection of e-open (resp. the union of e-closed) sets. We study the fundamental property of ∨е-sets (resp. ∧e-sets) and inve...

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