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identity element

/aɪˈdɛntɪti ˈɛlɪmənt/

翻译: 集合中这样一个元素:它与任何其他元素进行二元运算后,结果仍为那个其他元素。例如,0是加法的单位元,1是乘法的单位元。

1 个条目

phrase

/aɪˈdɛntɪti ˈɛlɪmənt/C1formalscientific
  • zh集合中这样一个元素:它与任何其他元素进行二元运算后,结果仍为那个其他元素。例如,0是加法的单位元,1是乘法的单位元。

An element in a set that, when combined with any other element through a binary operation, leaves that other element unchanged. For example, zero is the identity element for addition, and one is the identity element for multiplication.

  1. Mathematical identity elementC1formal

    An element in a set that, when combined with any other element of the set under a binary operation, leaves that element unchanged.

    zh单位元

    • Zero is the identity element for addition because adding zero to any number gives that number.
    • One is the identity element for multiplication because multiplying any number by one gives that number.
    • In group theory, the identity element is unique for each group.