Pre-order
1. <graph theory> traversal.
2. <theory> 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.
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| pre-emptive multitasking prefetch prefix prefix notation prefix syntax | ordering partial ordering pre-order reflexive relation | pre-order traversal PREP prepaging prepend preprocessor |
