Metadata
Author: LASER-wikipedia2
Data
English[en]
They do not form a vector space under the addition of operators, e.g. both id and -id are invertible (bijective), but their sum, 0, is not.
Chinese[zh]
它们算子加法下不是向量空间,例如, id和-id都是可逆的(双射),但它们的和为0,不可逆。