semilattice

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English[edit]

Etymology[edit]

semi- +‎ lattice

Noun[edit]

semilattice (plural semilattices)

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Wikipedia

  1. (mathematics) A partially ordered set that either has a join (a least upper bound) for any nonempty finite subset (a join-semilattice or upper semilattice) or has a meet (or greatest lower bound) for any nonempty finite subset (a meet-semilattice or lower semilattice).