Top network posts

• 73 What is integration by parts, really?
• 53 Conjectures (or intuitions) that turned out wrong in an interesting or useful way
• 34 If $A$ is the ring of continuous functions on a genus $g$ surface, can the genus of $X$ be seen by simple algebra in $A$?
• 22 Simply connected does not imply contractible. Is there a nice counter example in $R^2$?
• 18 Homology of real projective space... I'm not satisfied with the argument in hatcher.
• 16 Definition of convolution?
• 15 Are there any efficient algorithms for deciding whether a finitely presented group is Abelian?
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