pre-order

<theory>

1. traversal.

2. A relation R is a pre-order if it is reflexive (x R x) and transitive (x R y R z => x R z). If it is also antisymmetric (x R y R x => x = y) then it is a partial ordering.

Last updated: 2001-10-01

Nearby terms:

prefix notationprefix syntaxpre-orderpre-order traversalPREP

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