Effective descent morphism;
Priestley space;
Stone space;
Open map;
Distributive lattice;
Ordered set;
Monadic functor;
EFFECTIVE CODESCENT MORPHISMS;
QUASIVARIETIES;
D O I:
10.1016/j.topol.2014.02.023
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We discuss the problem formulated in the title. We solve it only in two very special cases: for maps with finite codomains and for maps that are open and order-open, or, equivalently, open and order-closed. (C) 2014 Elsevier B.V. All rights reserved.