论文标题
$ sl（2，\ mathbb {z}）$，les tresses - trois brins et le tore modulaire
$SL(2,\mathbb{Z})$, les tresses à trois brins et le tore modulaire
论文作者
论文摘要
$ sl（2，\ mathbb {z}）$在整数圆环上的动作以及中央对称性和Artin的三个字符串辫子的陈述，并用抛物线发电机$ \ pmatrix {1＆-1＆-1＆-1＆-1 \ cr 0＆1 \ cr} $和$ \ pmatrix $ cr cr cr and and crip as and and and and cr cr and and and crip cr。在庞加莱的一半飞机上派生的小组。
The action of $SL(2,\mathbb{Z})$ on the integer torus and its quotient by central symmetry and Artin's presentation of three strings braids, produces a presentation with parabolic generators $\pmatrix{1& -1\cr 0& 1\cr}$ and $\pmatrix{1& 0\cr 1& 1\cr}$ and describes the action of the derived group on Poincaré's half plane.
