Title
Join-continuity + Hypercontinuity = Prime continuity.
Abstract
A remarkable result due to Kou, Liu u0026 Luo states that the condition of continuity for a dcpo can be split into quasi-continuity and meet-continuity. Their argument contained a gap, however, which is probably why the authors of the monograph Continuous Lattices and Domains used a different (and fairly sophisticated) sequence of lemmas in order to establish the result. In this note we show that by considering the Stone dual, that is, the lattice of Scott-open subsets, a straightforward proof may be given. We do this by showing that a complete lattice is prime-continuous if and only if it is join-continuous and hypercontinuous. A pleasant side effect of this approach is that the characterisation of continuity by Kou, Liu u0026 Luo also holds for posets, not just dcpos.
Year
Venue
Field
2016
arXiv: Logic in Computer Science
Prime (order theory),Discrete mathematics,Lattice (order),If and only if,Complete partial order,Complete lattice,Mathematics,Lemma (mathematics)
DocType
Volume
Citations 
Journal
abs/1607.01886
0
PageRank 
References 
Authors
0.34
2
3
Name
Order
Citations
PageRank
Weng Kin Ho1235.41
Achim Jung211113.07
Dongsheng Zhao3646.88