- #1
amanda_ou812
- 48
- 1
Homework Statement
G = {e, a, a^2, a^3, b, y, D (delta), T (theta)} Where e=(1), a=(1, 2, 3, 4), a^2 = (1, 3)(2, 4), a^3 = (1, 4, 3, 2), b = (1, 4)(2, 3), y = (2, 4), D = (1, 2)(3, 4), T = (1, 3)
Find the subsets.
Homework Equations
I know that the order of G is 8. So, my subsets should have an order of 1, 2, 4, or 8
The Attempt at a Solution
I am looking at other examples and I do not understand how they make the subgroups. Is it just guessing or is there a method.
By googling, I know that there are 10 subgroups. So my subgroups with order 1 are just {e}, subgroups with order 2 are {e, a^2} {e, b} {e , y} {e, D}, {e, T}
The next ones are where I get confused. I would think that my subgroups with order 4 would be {e, a} and {e, a^3} but internet resources say that it is {e, a, a^3} but why?
And, using {e, a, a^3}, i only get 8 subgroups (including G). What are the other two?
I suppose my general question is: is there a method?
Thanks!