We find necessary and sufficient conditions for a ranking index defined on the set of triangular fuzzy numbers as a linear combination of its components to rank effectively. Then, based on this result, we characterize the class of ranking indices which generates orderings on triangular fuzzy numbers satisfying the basic requirements by Wang and Kerre in a slightly modified form.


Fuzzy number Triangular fuzzy number Ranking 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Adrian I. Ban
    • 1
  • Lucian Coroianu
    • 1
  1. 1.Department of Mathematics and InformaticsUniversity of OradeaOradeaRomania

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