# Tagged Questions

**2**

votes

**2**answers

380 views

### The relationship between SL(2,Z) and Gal(Qbar,Q)

(caveat: I'm not a number-theorist or Langlands-programme-er, and I don't expect to understand all the answers to this question, but I figured they might be useful to someone besides me).
I've been ...

**20**

votes

**3**answers

1k views

### Subgroups of GL(2,q)

I have been wondering about something for a while now, and the simplest incarnation of it is the following question:
Find a finite group that is not a subgroup of any $GL_2(q)$.
Here, $GL_2(q)$ ...