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Achim Krause
  • Member for 8 years, 8 months
  • Last seen this week
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question
3
File recovery after quick formatting
Sep 4, 2013
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54
Is there any use for $\sin(\sin x)$?
38
Simply-connected rational homology spheres
37
If $\Omega X \simeq \Omega Y$ then is $X \simeq Y$ for $X,Y$ simply connected?
32
What is the group of pointed homotopy classes of maps from $S^3 \times S^3$ to $S^3$?
28
What should I call a "differential" which cubes, rather than squares, to zero?

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