Abstract
This paper studies relationship between bipolar fuzzy sets, rough sets and \(\Gamma \)-semihypergroups. We study the notion of rough bipolar fuzzy \(\Gamma \)-hyperideals in \(\Gamma \)-semihypergroups. Then we prove that the lower and upper approximation of a bipolar fuzzy \(\Gamma \)-hyperideal is a bipolar fuzzy \(\Gamma \)-hyperideal.
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The authors of this paper Naveed Yaqoob and Muhammad Aslam declare that they have no conflict of interest.
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Yaqoob, N., Rehman, I. & Aslam, M. Approximations of bipolar fuzzy \(\Gamma \)-hyperideals of \(\Gamma \)-semihypergroups. Afr. Mat. 29, 869–886 (2018). https://doi.org/10.1007/s13370-018-0585-1
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DOI: https://doi.org/10.1007/s13370-018-0585-1