Top network posts

• 19 A theorem due to Gelfand and Kolmogorov
• 17 Counting categories with at most $n$ morphisms
• 15 Is every contractible space a cone?
• 15 Alternative to Axler's "Linear Algebra Done Right"
• 15 Are there analogies between $\Bbb F_q[x_1,x_2]$ and a suitable object related to $\Bbb Z$?
• 11 Example of a pair of non-cobordant manifolds
• 11 If $m$ and $n$ are distinct positive integers, then $m\mathbb{Z}$ is not ring-isomorphic to $n\mathbb{Z}$
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