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在数学中,集合X上的一个二元关系R是全关系(total relation),若其满足:「对所有属于X的a和b,a关系到b 或b关系到a。」
可用符号表示为:
上述性质一般也称为完全性(totality)。
In mathematics, a binary relation R over a set X is total or complete if for all a and b in X, a is related to b or b is related to a (or both).
In mathematical notation, this is
Total relations are sometimes said to have comparability.
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