Recent content by Aradan

  1. A

    Graduate Group Theory, unitary representation and positive eigenvalues

    Thanks for your help :)
  2. A

    Graduate Group Theory, unitary representation and positive eigenvalues

    Hi, I'm new in this forum. I have a problem i can't solve and searching on Google i couldn't find anything. It says: If D(g) is a representation of a finite group of order n , show that K = \sum^{i=1}_{n} D^{\dagger} (g_i) D(g_i) has the properties: b) All eigenvalues of K are...