Diamond partial order;
Rickart *-ring;
space preorder;
star partial order;
strong Rickart ring;
D O I:
10.1080/03081087.2016.1179250
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
The diamond partial order has been first introduced for matrices, and then discussed also in the general context of *-regular rings. We extend this notion to Rickart rings, and state various properties of the diamond order living on the so-called strong Rickart rings. In particular, it is compared with the weak space preorder and the star order; also existence of certain meets and joins under diamond order is discussed.