Top network posts

• 97 How to put 9 pigs into 4 pens so that there are an odd number of pigs in each pen?
• 43 Have there been (successful) attempts to use something other than spheres for homotopy groups?
• 42 Square of a second derivative is the fourth derivative
• 40 Can this be considered a "rigorous" definition of a limit?
• 38 If a topological space is homeomorphic to a smooth manifold, then will it be a smooth manifold?
• 36 Why is $\text{Hom}(V,W)$ the same thing as $V^* \otimes W$?
• View more network posts →