Abstract
In this paper, we present a topological duality for a category of partially ordered sets that satisfy a distributivity condition studied by David and Erne. We call these posets mo-distributive. Our duality extends a duality given by David and Erne because our category of spaces has the same objects as theirs but the class of morphisms that we consider strictly includes their morphisms. As a consequence of our duality, the duality of David and Erne easily follows. Using the dual spaces of the mo-distributive posets we prove the existence of a particular Δ1-completion for mo-distributive posets that might be different from the canonical extension. This allows us to show that the canonical extension of a distributive meet-semilattice is a completely distributive algebraic lattice.
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