摘要In this paper,we consider the upgrade problem for lattice and first introduce the concept of upgrade lattice,and we discuss some properties of the upgrade lattice and ideals,homomorphisms,upgrade lattic groups on the upgrade lattice.
9MI Hong-hai,YAN Guang-xia (School of Science, Hebei University of Technology, Tianjin 30 0130, China).The Properties of the Hyper Relation R_i[J].Chinese Quarterly Journal of Mathematics,2003,18(3):297-301.