Semi-uninorms and implications on a complete lattice

  • Authors:
  • Hua-Wen Liu

  • Affiliations:
  • School of Mathematics, Shandong University, Jinan, Shandong 250100, China

  • Venue:
  • Fuzzy Sets and Systems
  • Year:
  • 2012

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Abstract

An extension of a uninorm called a semi-uninorm is introduced and discussed in this paper. First, we introduce the concept of semi-uninorms on a complete lattice. Then, we discuss two kinds of residual operators of semi-uninorms and give conditions such that the operators are implications. We also give equivalent conditions for infinitely @?-distributive left- and right-conjunctive semi-uninorms. Furthermore, we define two classes of induced operators by implications on a complete lattice and give conditions such that they are semi-uninorms. We also provide the equivalent conditions for the infinitely @?-distributive implications in their second variables.