Abstract
We investigate in this paper approximate operations on sets, approximate equality of sets, and approximate inclusion of sets. The presented approach may be considered as an alternative to fuzzy sets theory and tolerance theory. Some applications are outlined.
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Pawlak, Z. Rough sets. International Journal of Computer and Information Sciences 11, 341–356 (1982). https://doi.org/10.1007/BF01001956
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DOI: https://doi.org/10.1007/BF01001956