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4 problems

  1. Oct 6, 2012 #1
    Hello,
    Please help in solving the four set of problems, i will be very happy explaining comment as really want to understand.
    The problem will spread to the extent of understanding preduduschey.

    1 Problems:

    The set M, M = {e^(j*2*pi*k/n) , k= 0,1,2....n-1} denotes the set of the nth roots of unity,
    i.e. the solution set of z^n = 1 for fixed n.
    Show that M, together with multiplication of complex numbers, forms a group.
     
  2. jcsd
  3. Oct 6, 2012 #2
    Ok. To show something is a group, what four things do you need to show?

    Which one(s) are you stuck on?
     
  4. Oct 6, 2012 #3
    Are the following evidence to the problem?
     

    Attached Files:

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