|
3 |
edited title; edited title
|
||
The free group $F_2$ has index 12 in $SL(2,\mathbb{Z})$SL(2,$\mathbb{Z}$) |
||||
|
|
2 |
edited tags
|
||
|
|
1 |
|
||
The free group $F_2$ has index 12 in $SL(2,\mathbb{Z})$Is there someone who can give me some hints/references to the proof of this fact?
|
||||
