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Erik Kjellgren's user avatar
Erik Kjellgren's user avatar
Erik Kjellgren's user avatar
Erik Kjellgren
  • Member for 7 years, 1 month
  • Last seen more than a week ago
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About

Postdoc researcher in theoretical chemistry and quantum computing at University of Southern Denmark.

I find it fun to implement different quantum chemistry methods in Python/Cython and Fortran. If you like take a look at my little QM program on Github SlowQuant - https://github.com/Melisius/SlowQuant

I also have a blog, where I have some posts regarding quantum chemistry and personal finance in Denmark - https://erikkjellgren.com

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Top posts
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3
Convergence Test (Ratio Test) for $\sum_n \frac{(2n)!}{n^{2n}}$
Jun 3, 2018
question
2
Integral of the form $\int_\Omega |\mathbf{r}_1 - \mathbf{r}_2| \exp\left(-\frac{1}{2}(r_1^2+r_2^2)\right)\mathrm{d}\mathbf{r}_2$
May 6, 2021
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General solution of $a^x = b^x\cdot(1-c) - c$
Mar 8, 2021
answer
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What is the asymptotic bound on the summation?
Jun 5, 2018
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21
What properties of carbon dioxide make it a greenhouse gas?
18
Hellmann-Feynman Forces with Hartree-Fock
11
Two-electron integral algorithm
11
Spin in meta-GGAs
10
Cauchy-Schwarz inequality for integral derivatives