右傍系空间 space of right cosets ; [数] right coset space

左傍系空间 space of left cosets ; left coset space

右傍系分解 right coset expansion ; right coset decomposition

傍系遗传 collateral inheritance

完全近傍系 complete system of neighborhoods

基本近傍系 fundamental system of neighborhoods

一近傍系的基底 base for a neighbourhood system