Quick question, what does this mean

Question

empty · Answer

$$ \mathbb{Z}  /n \mathbb{Z} $$

anonymous · Answer

Maybe this will help idk lol https://answers.yahoo.com/question/index?qid=20101008044808AAIoNtG

anonymous · Answer

WAIT This will help http://www3.nd.edu/~sevens/znzstar.pdf

empty · Answer

Cool that was it thanks.

anonymous · Answer

Yw

anonymous · Answer

(Z/nZ)* is a multiplicative group and is only part of the picture of Z/nZ which typically represents a *ring* Z/nZ (and for prime n you get finite fields since you no longer have to worry about zero-divisors)

anonymous · Answer

it's basically the ring of integers modulo $n$ with usual addition, multiplication

anonymous · Answer

the notation is suggestive of the fact that $n\mathbb{Z}$ is an ideal of $\mathbb{Z}$ and the ring $\mathbb{Z}/n\mathbb{Z}$ is a quotient (namely of $\mathbb{Z}$ mod $n\mathbb{Z}$)