Studies on 2-dimensional complex hyperbolic triangle groups

讨论了（n,n,∞;k）型的复双曲三角形群，得到了一个新的非离散群列表。特别地，我们证明了如果n >21，则（n,n,∞;k）型的复双曲三角形群是非离散的。我们还找到了10个离散的复双曲三角形群，类型为（n,n，无穷；k）。

We discuss complex hyperbolic triangle groups of type (n,n,infinity;k) and obtain a new list of non-discrete groups. In particular, we show that if n >21, then complex hyperbolic triangle groups of type (n,n,infinity;k) are non-discrete. Also we find 10 discrete complex hyperbolic triangle groups of type (n,n,infinity;k).