paper

The strong -cleanness over rings

arXiv:1306.0108

Abstract

An element of a ring is strongly -clean provided that it can be written as the sum of an idempotent and a strongly nilpotent element that commute. A ring is strongly -clean in case each of its elements is strongly -clean. We investigate, in this article, the necessary and sufficient conditions under which a ring is strongly -clean. Many characterizations of such rings are obtained. The criteria on strong -cleanness of matrices over commutative local rings are also determined.

15 pages

References in corpus (1)