Pan-operations structure with non-idempotent pan-addition
Fuzzy Sets and Systems(2004)
Abstract
The structure of pan-operations, involving a pan-addition and a pan-multiplication which form a commutative isotonic semiring, as defined by Wang and Klir, are discussed. Based on semi-group theory, special properties of identity element and the idempotent of pan-addition and pan-multiplication, the case of a non-idempotent pan-addition are studied. Our results correct a theorem of Mesiar and Rybarik. Moreover, a sufficient and necessary condition for the continuity of a pan-operator defined on [0,+∞] is presented. Our conclusions are expected to result in the introduction of the concept of general fuzzy integral.
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Key words
Semigroup,Pan-operations,Zadeh's operators,Idempotent
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