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A note on the core of fuzzy numbers

机译:关于模糊数核心的注记

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摘要

Recently, Aytar et al., The core of a sequence of fuzzy numbers, Fuzzy Sets and Systems 159 (2008) 3369-3379 introduced the concept of the core for sequences of fuzzy numbers and gave a characterization for this concept. Aytar also introduced two different definitions of extreme limits (lim inf, lim sup and Lim inf, Lim sup) for a bounded sequence of fuzzy numbers. According to these definitions, Lim inf(Lim sup, resp.) of a sequence always exists even though lim inf (lim sup, resp.) may not exist. Thus we show that if lim inf and lim sup exist, then these two definitions are equivalent. We also characterize the core of a sequence in terms of Lim inf and Lim sup. It is analogous to the characterization of the core given by Aytar.
机译:最近,Aytar等人,“模糊数序列的核心”,Fuzzy Sets and Systems 159(2008)3369-3379介绍了模糊数序列的核心的概念,并对该概念进行了描述。 Aytar还针对模糊数的有界序列引入了两种不同的极限极限定义(lim inf,lim sup和Lim inf,Lim sup)。根据这些定义,即使可能不存在lim inf(lim sup,分别),序列的Lim inf(Lim sup,分别)也始终存在。因此,我们表明,如果存在lim inf和lim sup,那么这两个定义是等效的。我们还根据Lim inf和Lim sup来描述序列的核心。它类似于Aytar给出的核心特征。

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