Observational properties of the largest Local Group spiral M31(Andromeda galaxy) are presented.
介绍了本星系群中最大的旋涡星系M31(仙女星系)的基本观测性质。
In this paper we investigate algebraic properties of the set of local formations which satisfy n, and for such formation we give the structure of minimal non group.
本文研究了满足条件N的局部群系集合的代数性质,同时对于这类群类,给出了极小非-群的结构。
In this paper we investigate algebraic properties of the set of local formations which satisfy n, and for such formation we give the structure of minimal non group.
本文研究了满足条件N的局部群系集合的代数性质,同时对于这类群类,给出了极小非-群的结构。
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