20. Glossary
partially ordered set; espace partiellement ordonné
Set with an order relation for which not all elements are comparable.
Filter ; filter
Stack of subsets of a given set stable at finite intersections.
Stack ; stack
Collection of subsets of a given set containing all the supersets of each of its members.
Order relation; order relation
Reflexive, anti-symmetrical and transitive relationship.
Trellis; lattice
Partially ordered space in which each pair of elements has an upper and a lower bound.
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