摘要
在文中问题6提出:“哪些根性质,对于每个环 A,R(A)关于加群(A,+)的任意自同态是不变的?”本文给出了刻划如此根性质的一个充分必要条件。
In book 1,problem 6 points out:which radical properties have the property that R(A)iS invariant in every ring with respect to all endomorphisms of the additive group(A,+)This paper gives a necessary and sufficient condition for suchrdical property.
