Thread: integral domain?

Im having problems workout out
For which n are the integers mod n an integral domain?

can any1 show me how to prove this

Originally Posted by kbartlett

Im having problems workout out
For which n are the integers mod n an integral domain?

can any1 show me how to prove this

ok, lets start with the basics. do you know what an integral domain is?

Originally Posted by kbartlett

Im having problems workout out
For which n are the integers mod n an integral domain?

For we require that if implies or .

Now if is not prime there is so that . Then but neither are identity elements.

Therefore must be prime.

Lol im so stuipd, it was already in my lecture notes anyway.

But thanks