Let .

Prove is an abelian group under multiplication.

This makes sense since the units are group under multiplication.

is the identity.

How do I find the inverse?

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- Aug 27th 2011, 02:49 PMdwsmithRoots of Unity as a group
Let .

Prove is an abelian group under multiplication.

This makes sense since the units are group under multiplication.

is the identity.

How do I find the inverse? - Aug 27th 2011, 03:21 PMPlatoRe: Roots of Unity as a group
- Aug 27th 2011, 03:52 PMdwsmithRe: Roots of Unity as a group
- Aug 27th 2011, 03:58 PMdwsmithRe: Roots of Unity as a group
For associative and commutative, that is trivial true since is a field, correct?

- Aug 27th 2011, 04:05 PMPlatoRe: Roots of Unity as a group