Show if Odd n-cycles Equal Conjugacy Classes A_n

  • Thread starter Thread starter abm
  • Start date Start date
  • Tags Tags
    Classes
abm
Messages
3
Reaction score
0
Could anyone help to show that if n is odd then the set of all n-cycles consists of two conjugacy classes of equal size in A_n? Thx
 
Physics news on Phys.org
Show us how you started and where you got stuck.
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
Back
Top