Zeng-Tai Gong

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The soft set theory, proposed by Mo10dtsov, can be used as a general mathematical tool for dealing with un­ certainty. By analyzing the characters of the interval­ valued intuitionistic fuzzy set and soft set models, the purpose of this article is to introduce the concept of the interval-valued intuitionistic fuzzy soft set and then employ its corresponding(More)
In this paper, by means of properties of a differential and integral calculus for fuzzy set valued mappings and completeness of metric space of fuzzy numbers, we obtained some existence theorems under the compactness-type conditions on a closed subset of fuzzy number space (E<sup>n</sup>, D) to fuzzy differential equations.
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