human: Given a node-centered hypergraph: <hypergraph>, where nodes represent authors and hyperedges represent groups of authors who co-authored the same paper.

Details of the hypergraph:
Center node: "QL-operations and QL-implication functions constructed from tuples (O,G,N) and the generation of fuzzy subsethood and entropy measures"
  Abstract: Abstract   Considering the important role played by overlap and grouping functions in several applications in which associativity is not demanded, in this paper we introduce the notion of  QL -operations constructed from tuples    (  O  ,  G  ,  N  )   , where overlap functions  O , grouping functions  G  and fuzzy negations  N  are used for the generalization of the implication    p  →  q  ≡  ¬  p  ∨  (  p  ∧  q  )   , which is defined in quantum logic ( QL ). We also study under which conditions  QL -operations constructed from tuples    (  O  ,  G  ,  N  )    are fuzzy implication functions, presenting a general form for obtaining  QL -implication functions, and particular forms of such fuzzy implication functions according to specific properties of  O  and  G . We analyze the main properties satisfied by  QL -operations and  QL -implication functions, establishing under which conditions of  O ,  G  and  N , the derived  QL -operations (implication functions) satisfy the different known properties for fuzzy implication functions. We show that  QL -implication functions constructed from tuples    (  O  ,  G  ,  N  )    are richer than  QL -implication functions constructed from t-norms and positive t-conorms. We provide a comparative study of  QL -implication functions and other classes of fuzzy implication functions constructed from fuzzy negations, overlap and grouping functions, analyzing the intersections among such classes. Finally, we present the application of both  QL -operations and  QL -implication functions constructed from tuples    (  O  ,  G  ,  N  )    to the generation of fuzzy subsethood and derived entropy measures, which are useful for several practical applications.

Connected through hyperedge HE-1 (induced by source paper "Generalized interval-valued OWA operators with interval weights derived from interval-valued overlap functions"):
  with members:
    (none)

Question: Please tell me which research area the center author belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Mathematics