(March 3, 2018 at 7:12 pm)polymath257 Wrote: We can consider the Gaussian integers, which are numbers of the form m+n*i where both m and n are integers. It turns out that many of the classical properties of the integers still hold for Gaussian integers, including things like unique factorization into primes. These turn out to be useful even for questions about ordinary integers and many of their early uses were for that purpose.
So Gaussian integers are complex numbers, but with integers only involved instead of just any real numbers.
