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Welcome to Oldfriend Archive, the official 4chan archive of the NSA. Hosting ~170M text-only 2003-2014 4chan posts (mostly 2006-2008).
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No.2982892 View ViewReplyOriginalReport
What is your favorite Manifold and why?
Any additional structures on it?

(Moreover, a question thats bugging me, for the knowing people: What can you know about a Riemannian manifold, with only local information, and what not. It's kinda strange/mysterious. And also, are all the invariances of the metric spacial transformations...you know, like SO(3)?)