Apparently, this user prefers to keep an air of mystery about them.
13 Correlation and Causation. When can we believe correlation (reasonably, at least) imply causation Apr 25 '10
7 Request: intermediate-level proof: every 2-homology class of a 4-manifold is generated by a surface. Apr 25 '10
4 triangulations of torus, general, and Euler number. (Hopefully more interesting/relevant) Apr 25 '10
-11 Examples of common false beliefs in mathematics May 5 '10