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Abstract:
设R是有单位元的结合环,I,J分别是R的补右零化子集和补左零化子集,Z_r(R),Z_l (R)分别是R的右奇异理想和左奇异理想.证明了如果存在互素的正整数m,n,使得任意x∈RI,y∈RJ均满足(xy)~k=x~ky~k,其中k=m,m+1,n,n+1;或者任意x∈RJ,y∈RI均满足(xy)~k=y~kx~k,其中k=m-1,m,n-1,n是正整数,那么R是交换环.特别地,如果对于I=N(R)∪J(R)∪Z_r(R)和J=N(R)∪J(R)∪Z_l (R),存在正整数m,使得任意x∈RI,y∈RJ均满足(xy)~k=~xky~k,其中k=m,m+1,m+2;或者任意x∈RJ,y∈RI均满足(xy)~k=y~kx~k,其中k=m-1,m,m+1,那么R是交换环.
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数学进展
Year: 2023
Issue: 04
Volume: 52
Page: 611-618
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WoS CC Cited Count: 0
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