1)identity functor,单位函子2)unit group functor,单位群函子3)unit function,单位函数4)homotopy monomorphism functor,同伦单函子5)quantal unit,量子单位6)atomic unit,原子单位
用法例句
This paper gives some properties of homotopy regular morphisms,defines homotopy epimorphism functor and homotopy monomorphism functor,it also proves that these two functors preserve the properties of homotopy regular.