英语词汇“pre-order”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pre-order
释义	pre-order pre-order (graph theory)traversal. pre-order (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 alsoantisymmetric (x R y R x => x = y) then it is a partial ordering.
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