搜索结果: 1-1 共查到“组合数学 structural”相关记录1条 . 查询时间(0.043 秒)
Some remarks on structural matrix rings and matrices with ideal entries
structural matrix ring incidence algebra pre-order quasiorder
2011/1/19
Associating to each pre-order on the indices 1, ..., n the corresponding structural matrix ring, or incidence algebra, embeds the lattice of n-element pre-orders into the lattice of n × n matrix rings...