A Spectral-style Duality for Distributive Posets |
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Authors: | Luciano J González Ramon Jansana |
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Institution: | 1.Facultad de Ciencias Exactas y Naturales,Universidad Nacional de La Pampa,Santa Rosa,Argentina;2.Department de Filosofia, IMUB and BGSMath,Universitat de Barcelona,Barcelona,Spain |
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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 Erné. We call these posets mo-distributive. Our duality extends a duality given by David and Erné 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 Erné 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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