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词汇 Direct summand
分类 英语词汇 英语翻译词典
释义

Direct summand

英语百科

Direct sum

(重定向自Direct summand)

The direct sum is an operation from abstract algebra, a branch of mathematics. As an example, consider the direct sum  \mathbf{R} \oplus \mathbf{R} , where  \mathbf{R} is the set of real numbers.  \mathbf{R} \oplus \mathbf{R} is the Cartesian plane, the xy-plane from elementary algebra. In general, the direct sum of two objects is another object of the same type, so the direct sum of two geometric objects is a geometric object and the direct sum of two sets is a set.

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