Is there an algorithm for finding all of the subgroups of $D_{15}$? Also, is there a formula for finding the size of that subgroup?
Not sure where to start with finding all the subgroups of $D_{15}$ so any tips would be helpful! Thanks.
2026-03-27 23:35:56.1774654556
Determine all the subgroups of the dihedral group $D_{15}$
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Check this paper by Conrad. Theorem 3.1