Characterize those integers n such that the only abelian groups of order n are cyclic.

Characterize those integers n such that the only abelian groups of order n are cyclic.
(a) Let G be a cyclic group of order n. Prove that fo every divisor d of n there is a subgroup of G having order d. (b) Characterize all factor groups of Z70.
(6)(20 points) (a) Let G be a cyclic group of order n. Prove that for every divisor d of n there is a subgroup of G having order d. (b) Characterize all factor groups of Z70 -
(6)(20 points) (a) Let G be a cyclic group of order n. Prove that for every divisor dofn there is a subgroup of Ghaving order d. (b) Characterize all factor groups of Z70.
(a) State the Fundamental Theorem of Finitely Generated Abelian Groups. (b) List all abelian groups of order 2450 up to isomorphism. (c) Show every abelian group of order 2450 has an element of order 70.
Find Aut(ℤ15). Use the Fundamental Theorem of Abelian Groups to express this group as an external direct product of cyclic groups of prime power order. Please provide as much work and explanation as is relevant.
Find all non-isomorphic abelian groups of order 48
(a) Let be a cyclic group of order . Prove that for every divisor of there is a subgroup of having order . (b) Characterize all factor groups of
Count the number of abelian groups (up to isomorphism) of order at most 10.
Let A be the abelian group with generators a, b, c, d and relations 2a 4b + с, 4c-d-2b and a + b + c + d-0. Write A as the cartesian product of cyclic groups as in the classifaction theorem
Let A be the abelian group with generators a, b, c, d and relations 2a 4b + с, 4c-d-2b and a + b + c + d-0. Write A as the cartesian product of cyclic groups as in the...
Utilizing theorem 2.2, please answer
proposition 2.1.
2.1 Structure of Finite Abelian Groups Theorem 2.2 (Structure Theorem for Finite Abelian Groups). 1. Let n = pap2...pl with the pi distinct primes and the li non-zero. Let G be an abelian group of order n. We have G is isomorphic to a product Gpi x Gpr ... Ger where for each i, Gp; is a abelian group of order po 2. Let H be a finite abelian p-group of order pm...