Question

Help!
Find all the abelian groups of order 9 up to isomorphism. (I need to give a mathematical proof.)

Answer 1

Might want to ask in math, not computer science.

Also, you can tag mathmale on higher level math. He is a retired professor and nice guy.

Answer 2

still need help with this?

Answer 3

yes @abrahamglasser

Answer 4

alright, my abstract algebra is a little rusty. Doesn't "abelian groups of order 9 up to isomorphism" refer to \[Z_{9} or Z_{3} * Z_{3}\]

Answer 5

if you prove the prime factors of 9 then you have proved that these are the abelian groups? i'm not sure so...

Answer 6

Thanks @abrahamglasser