groups or homorphism

  1. L

    Homomorphism

    I know the formula that I have to show is true. However, I am confused where to start to prove it. I thought multiplying the 2 matrices together but that’s not possible. Can someone start me off please?
  2. T

    Help with groups/homorphism?

    Hi I'm doing some exercises on homorphisms and the first question is: Show p:C^*--->R, p(z)=log|z| (z is in C) is a homorphism. I know the method p(ab)=p(a)p(b) but how can I tell from this question which binary operations the groups use to prove it? I get this problem in other areas aswell...