Preorder (disambiguation)
The term preorder may refer to:
Look up preorder in Wiktionary, the free dictionary.
In mathematics:
- Preorder, a reflexive, transitive relation
- Preorder field, a field of sets structure on a set with preorder
- Preordered field, a field with a preorder
- Preordering, a vertex ordering from a tree or other graph traversal; see Depth-first search#Vertex orderings
In marketing:
- Pre-order – an order placed for an item which has not yet been released.
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