At last, we we prove the decomposition and synthetize theorems of general fuzzy rough approximation operator.

最后，给出了广义模糊粗糙近似算子的分解与合成定理。

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This paper introduces the lower and upper approximations operator of rough sets and fuzzy sets.

本文介绍了粗糙集和模糊粗糙集的上下近似。

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