模糊关系方程的求解问题是模糊集与系统中极其重要的研究课题之一，大部分模糊推理系统都可以通过模糊关系方程实现。

The resolution problem of fuzzy relation equations (FRES) is a very important subject in fuzzy sets and systems, the majority of fuzzy inference systems can be implemented by using FERS.

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论文基于模糊集合的交集与并集算子，给出了机械串联系统与并联系统的模糊可靠性数字仿真模型；

In the paper, models for fuzzy reliability digital simulation of mechanical series system and parallel system based on the operators of intersection and parallel set in fuzzy mathematics are given.

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模糊聚类、识别与优选是系统优化模糊集分析理论的数学基础。

The theory of fuzzy cluster, recognition and optimum decision is the mathematical basis of optimum fuzzy set of system.

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