Math 2.0

Order, lattices, ordered algebraic structures Complete lattices and completions Concept

Completeness in order theory

Summary

In order theory, a completeness property of a partially ordered set says that every subset of a certain kind has a supremum, or an infimum. All subsets give complete lattices, and nonempty bounded subsets give conditionally complete lattices. Directed subsets give directed-complete partial orders. These notions organize much of lattice theory and domain theory.

Further reading

  1. Web https://en.wikipedia.org/wiki/Completeness_(order_theory)
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