首先给出了弱完全交既约元、余dcpo及way-up的概念;然后结合way-up关系和新的辅助关系定义了弱上邻的概念;最后,借助弱完全交既约元讨论了上邻及弱上邻在交半格、完备格及余dcpo不同背景下的性质.
The concepts of weak complete intersection irreducible elements, co-dcpo and way-up are introduced. Then the concept of weak adjacent is given based on way-up and new auxiliary relation. Finally, the properties of adjacent and weak adjacent are discussed by using weak complete irreducible elements in semilattices, complete lattices and eo-depo.