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具有有限左零因子的一类环的结构
A CLASS OF RINGS WITH A FINITE NUMBER OF ZERO DIVISORS
【摘要】 <正> 本文的环,概指结合环.设 R 是具有 n(n≥2)个左(右)零因子的环,[1]证明|R|≤n~2,并且,当|R|=n~2时,n=P~s,P 是素数;[2]决定了当 R 是交换环且|R|=n~2时 R 的结构,本文讨论非交换的情形,决定具有 n(n≥2)个左(右)零因子而元数为竹 n~2的环的结构.
【Abstract】 In this note,the following theorem is proved: Let R be a non-commutative ring with n(n≥2)left zero divisors and|R| =n2.if every right zero divisor of R is a left zero divisor,then R is iso- morphic to the following ring A: A={(a,b)|a,b∈F} (a,b)+(c,d)=(a+c,b+d) (a,b)·(c,d)=(ac,ad) where F is the finite field with n elements,n=ps. If there exists a right zero divisor of R,but it is not a left zero divi- sor,then R is isomorphic to the ring B: B={(a,b)|a,b∈F} (a,b)+(c,d)=(a+c,b+d) (a,d)·(c,d)=(ac,ad+bcPt),1≤t≤s-1.
- 【文献出处】 北京师范大学学报(自然科学版) ,Journal of Beijing Normal University(Natural Science) , 编辑部邮箱 ,1983年03期
- 【被引频次】17
- 【下载频次】37