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\title{Effective codescent morphisms of \\distributive lattices}
\author{Manuela Sobral}
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(joint work with George Janelidze)
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Two different approaches are presented to describe the effective
codescent morphisms of bounded distributive lattices:
- a topological approach, which enables us to solve the problem in
two very special cases: for maps with finite codomain and for open
and order-open (or, equivalently, order-closed) maps;
- an algebraic approach, giving some sufficient conditions.
Finally, we compare the results obtained.
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