identity n. 1.同一,一致;同一性。 2.本體;正身;個(gè)性。 3.【邏輯學(xué)】同一性。 4.【數(shù)學(xué)】恒等(式)。 an identity card 身份證,居民證。 an identity disk [tag] (士兵的)證章。 systems suited to its national identity 符合自己民族特點(diǎn)的制度。 national identity 民族面貌。 the principle of identity 【邏輯學(xué)】同一律。 establish [prove] one's identity 證明身份。 mistaken [false] identity 認(rèn)錯(cuò)人。 no matter what their identity 無(wú)論什么人。 sink one's identity 隱瞞歷史。
additive adj. 1.附加的,增加的。 2.【化學(xué)】加成的,加和的。 3.【數(shù)學(xué)】加法的;加性的。 n. 1.添加劑;添加物。 2.【數(shù)學(xué)】加法。
We call o the additive identity . 我們稱(chēng)O為加性單位元素。
We call o the additive identity 我們稱(chēng)o為加性單位元素。
百科解釋
In mathematics the additive identity of a set which is equipped with the operation of addition is an element which, when added to any element x in the set, yields x. One of the most familiar additive identities is the number 0 from elementary mathematics, but additive identities occur in other mathematical structures where addition is defined, such as in groups and rings.