identity element

英 美
  • n.单位元素
  • element n.要素;元素;(学科的)基本原则;(复数)恶劣天气;元件
  • identity n.一致;身份;特征
Noun:
  1. an operator that leaves unchanged the element on which it operates;

    "the identity under numerical multiplication is 1"

【邻近词汇】