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juan arroyo

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 4 years, 7 months
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  • Last seen Jul 8 '18 at 17:09

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Top posts (46) All Questions Answers | Votes Newest

11 Differentiating a function of a variable with respect to the variable's derivative Jan 5 '17
7 Showing that $\mathbb S^1$ is a deformation retract of the Mobius strip, rigorously. Jul 25 '15
5 Do the level sets of a constant rank map give a foliation of the domain? Apr 5 '16
5 An invitation to differential geometry? Jan 9 '17
3 Can the integral of a function be larger than function itself? Jan 7 '17
3 If $\lim_{n\to\infty} \frac{a_{n+1}}{a_n} = 0$, show that $\lim_{n\to\infty}{a_n} =0$. Jan 25 '17
3 For a vector bundle $\xi:E\to M$, why is Trace a parallel section of the bundle $End(\xi)^*$? Jan 22 '17
3 Let $h(z) = g(f(z))$. If two of the three functions $f$, $g$, and $h$ are holomorphic and non-constant, must the third also be holomorphic? Aug 15 '15
3 If $\mathcal{F}$ is the Fourier transform, what can be said about $\mathcal{F}(L^1(\mathbb{R})) \cap L^1(\mathbb{R})$? Feb 16 '16
3 What is the value of $a/b/c$? Jan 1 '17
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