partially ordered set
set ordered by a transitive, antisymmetric, and reflexive binary relation
totally ordered set
set paired with a total order
complex
in mathematics
ordered group
group with a compatible partial order
complete lattice
partially ordered set in which all subsets have both a supremum and infimum
tree
partially ordered set such that, for any element, the subset of elements less than it is well-ordered
ordered vector space
vector space with a partial order