topology contravariant functor 拓扑反变算子

exact contravariant functor 正合反变函子

additive contravariant functor 加性反变函子

left exact contravariant functor 左正合反变函子

half exact contravariant functor [数] 半正合反变函子

right exact contravariant functor [数] 右正合反变函子

contravariant full functor 反变全函子

contravariant Hom functor 反变Hom函子

contravariant morphism functor 反变射函子