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Semirings which are unions of rings 被引量:3
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作者 郭聿琦 F.Pastijn 《Science China Mathematics》 SCIE 2002年第2期172-195,共24页
Semirings which are a disjoint union of rings form a variety S which contains the variety of all rings and the variety of all idempotent semirings, and in particular, the variety of distributive lattices. Various stru... Semirings which are a disjoint union of rings form a variety S which contains the variety of all rings and the variety of all idempotent semirings, and in particular, the variety of distributive lattices. Various structure theorems are established which bring insight into the structure of the lattice of subvarieties of S. 展开更多
关键词 semiring ring COMPLETELY REGULAR semigroup lattice of varieties band idempotent semiring semilattice ORTHODOX COMPLETELY REGULAR semigroup bisemilattice ORTHODOX semiring COMPLETELY simple semigroup Mal'cev product.
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