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Winther
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I'm currently an associate professor at the Institute for Theoretical Astrophysics at University of Oslo working on cosmology and in particular large scale structure formulation. My main research interests these days is tests of gravity on cosmological scales and numerical (N-body) simulations of structure formation in gravitational theories that go beyond General Relativity. I got my PhD in at the University of Oslo in 2013.

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51
Proof (claimed) for Riemann hypothesis on ArXiv
Aug 22, 2016
39
Integration and differentiation of Fourier series
May 3, 2016
31
The expected outcome of a random game of chess?
Jun 25, 2014
25
An integral identity from Ramanujan's notebooks
Sep 2, 2015
21
$f(f(f(x))) = x$. Prove or disprove that f is the identity function
Apr 30, 2017
16
If $\sum_{n_0}^{\infty} a_n$ diverges prove that $\sum_{n_0}^{\infty} \frac{a_n}{a_1+a_2+...+a_n} = +\infty $
Jan 10, 2016
16
The limit of $(n!)^{1/n}/n$ as $n\to\infty$
Sep 17, 2014
15
Evaluating $\int_{-\infty}^\infty\frac1{1+x^2+x^4+\cdots}\ \text{dx}$
Dec 23, 2016
15
Proving that $\int_0^1 f(x)e^{nx}\,{\rm d}x = 0$ for all $n\in\mathbb{N}_0$ implies $f(x) = 0$
Jan 13, 2015
15
An integral identity from Ramanujan's notebooks
Sep 2, 2015
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Closed as off-topic after asking and answering own question
5
MathJax not rendering in comments and post preview
5
Requests for Reopen & Undeletion Votes, etc. (volume 01/2015 - 07/2018 )
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Problem with new MNRAS style files / newtx on arXiv
8
understanding a mathematica equation
6
Creating n-dimensional mathematical vector classes through inheritance
5
Help me understand Gauss law
5
Error accumulation in NDSolve?