目的研究幂等元半环簇的重要子簇R。M和R。M。方法利用幂等元半环上的偏序关系和幂等元半环的加法半群和乘法半群上的Green-关系的定义。结果从多个角度刻划了R。M和R。M中成员的性质,并讨论了其中成员的结构。结论得到关于R。M和R。M的一些重要结果。
Aim To study the important subvarieties R. M and R .M of the variety of idempotent semirings. Methods The definitions of the partial Elations on idempotent semirings and Green-relations on the additive reduct and the multiplicative reduct of idempotent semirings are used. Results The properties of the members of R . M and o M are characterized from many kinds of angles and the strcture of them is discussed. Conclusion Some results about R . M and R . M are oblained.