You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
I'll bet 5% can find the "easy" solutions like:
=2-√3;
=1;
=0
I tried doing that, but I has a dumb and forgot that p+(1/p) != (p+1)/p
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.