2-GOOD RINGS
2-GOOD RINGS
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DOI:
10.1093/qmath/hah046
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发表时间:
2005-09
影响因子:
0.7
通讯作者:
P. Vámos
中科院分区:
文献类型:
--
作者:
P. Vámos
A ring R is said to be k-good if every element is the sum of k units. We show that the endomorphism ring of a free module of rank at least 2 is 3-good and that every ring can be embedded in a 2-good ring. Answering a question of Skornjakov, we show that a (right) self-injective von Neumann regular ring is 2-good provided it has no 2-torsion. This generalizes a result of Zelinsky's on the ring of linear transformations of a vector space.