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Counting norms on an infinite dimensional vector space

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The term $H^1(N,A)^{G/N}$ in the inflation-restriction exact sequence

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Pax

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divisors of $p^4+1$ of the form $kp+1$

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Prove that this expression is greater than 1/2

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Does for every vector field there always exist a volume form for which the vector field is a homothety?

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shenghao

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