Top network posts

• 73 In categorical terms, why is there no canonical isomorphism from a finite dimensional vector space to its dual?
• 45 Original works of great mathematician Évariste Galois
• 38 Is There a Natural Way to Extend Repeated Exponentiation Beyond Integers?
• 37 Why is the cartesian product so categorically robust?
• 31 Tricky contour integral resulting from the integration of $\sin ax / (x^2+b^2)$ over the positive halfline
• 31 Submodule of free module over a p.i.d. is free even when the module is not finitely generated?
• 28 A function that is $L^p$ for all $p$ but is not $L^\infty$?
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