Observation: Samson Abramsky's /no global section/ on a sheaf of observer contexts echoes general covariance in GR...
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
Observation: Samson Abramsky's /no global section/ on a sheaf of observer contexts echoes general covariance in GR...