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  3. let g be an abelian group. (a) if h = {x ? g| |x|

Let G be an abelian group. (a) If H = {x ? G| |x| is odd},...

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Advance Math

  • Let G be an abelian group.

    (a) If H = {x ? G| |x| is odd}, prove that H is a subgroup of G.(b) If K = {x ? G| |x| = 1 or is even}, must K be a subgroup of G?(Give a proof or counterexample.)

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