Cartesian square
Alternative form of Coushatta
An automatic mental state in which a person continues to drive a vehicle safely and correctly but without the recollection of having done so.
plural of Aleksanian
(set theory) For a set X, the Cartesian product X² = X × X. / (category theory) A pullback.
集合 X の関係を調べるには、まず直積 X² = X × X を考えることから始める。
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