1. Find the number of generator of cyclic group
2. Let
G be a cyclic group and
H be a subgroup of
G. Prove that
G/H is also cyclic group.
3. Let
G be a group and
f : G → G defined by
Prove that
G is abelian.
4. Determine all automorphisms of
is an automorphism.
( under addition ).
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