# Order theory

## Branch of mathematics / From Wikipedia, the free encyclopedia

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For a topical guide, see Outline of order theory.

**Order theory** is a branch of mathematics that investigates the intuitive notion of order using binary relations. It provides a formal framework for describing statements such as "this is less than that" or "this precedes that". This article introduces the field and provides basic definitions. A list of order-theoretic terms can be found in the order theory glossary.

This article includes a list of general references, but it lacks sufficient corresponding inline citations. (December 2015) |