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关于半素环交换性的一点注记 总被引:1,自引:0,他引:1
Awtar proved that a semiprime ring R in which xy2x-yx2y∈Z(center of R)for every x and y in R is commutative. Guo Yuanchun proved that a semiprime ring satisfying (xy)2-xy2x∈Z for every x and y in R is commutative. In this note the following result is proved:A semiprime ring is commutative if R satisfies one of the following conditions:(1) x2y2 -xy2x∈Z for every x and y in R.(2) x2y2-yx2y-y∈Z for every x and y in R.(3) (yx)2 -xy2x∈Z for every x and y in R. 相似文献
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