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Top network posts
- 42 Does $\mathbb C\mathbb P^\infty$ have a group structure?
- 33 Natural examples of sequences of adjoint functors
- 26 Does there exist a closed manifold that can be given both a Euclidean and a Hyperbolic structure?
- 23 Why are Tamagawa numbers equal to Pic/Sha?
- 23 A "meta-mathematical principle" of MacPherson
- 22 Does smooth and proper over $\mathbb Z$ imply rational?
- 22 Is there a universal countable group? (a countable group containing every countable group as a subgroup)
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