The main purpose of this paper is to introduce *-operfect, τ*-clopen, α-*-closed, strongly α-*-closed and pre-*-closed sets. We compare them and obtain a diagram to show their relationships among these sets and related sets.
To see the editorial board, please visit the website of Springer Nature.
Manuscript Submission: HERE
For subscription options, please visit the website of Springer Nature.
Character limit 500/500