出典:Wiktionary
equivalence relation (複数形 equivalence relations)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/15 19:32 UTC 版)
In mathematics, an equivalence relation is a relation that, loosely speaking, partitions a set so that every element of the set is a member of one and only one cell of the partition. Two elements of the set are considered equivalent (with respect to the equivalence relation) if and only if they are elements of the same cell. The intersection of any two cells is empty; the union of all the cells equals the original set.
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因果関係.
an expression which expresses a proportion
納得させること
親等.