Recently, Qiao [8] investigated the distributive laws of uninorms over overlap and grouping functions when the uninorms were one of the usual classes (e.g., , , the family of idempotent uninorms, representable uninorms or uninorms continuous on ] 0, 1 [2) and obtained some characterizations. As an addendum to [8], in this paper, we investigate the distributive laws of overlap and grouping functions over uninorms. In addition, we show some characterizations when the uninorm U belongs to one certain class.
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