noun
direct product; Cartesian product
Mathematical term for the set of all ordered pairs (or tuples) from given sets. Used in set theory, algebra, and topology.
集合Aと集合Bの直積集合をA×Bと書く。
The direct product of sets A and B is written as A×B.
直積集合の要素は順序対である。
Elements of a direct product are ordered pairs.