给出了满足某可变恒等式的半质环的交换性定理，推广了已有的结论。

In this paper, the author gave some commutativity theorems on semi-prime ring with variable identity, which is a generalization related.

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同时给出了半素环的微商满足某些微分恒等式的结果。

Also we will discuss some differential identities in semiprime ring.

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