Another demonstration of the usefulness of symmetry..pic.twitter.com/QSBbznGFSI
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
Yup, equation (1) is. You can prove it by taking x = a+ b - y.. and then afterward since y is just a label you can change it back to x
it does at first glance but you can visualize it as "integrating from the other side"
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.