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Mathematics
Dr. Wolfgang Hintze's user avatar
Dr. Wolfgang Hintze's user avatar
Dr. Wolfgang Hintze's user avatar
Dr. Wolfgang Hintze
  • Member for 9 years, 9 months
  • Last seen this week
  • Germany
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About

I'm a physicist and have been using Mathematica since April 2003, communicating in the newsgroup comp.soft-sys.math.mathematica until it vanished in May 2014. My activities in SE have moved more to Mathematics since Dec. 2014.

In the 1980es I pubished two books on Rubik's cube and its "relatives" which was a nice exercise in group theory.

My main interests in SE are differential equations, functions, integrals, combinatorics, statistics, simulation, integer sequences, diophantine equations, matrix applications, operators.

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Top posts
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answer
42
Evaluate $\int_0^\infty\frac{\ln x}{1+x^2}dx$
Oct 29, 2018
answer
18
Analytic continuation of harmonic series
Jan 1, 2019
question
16
Closed form of Euler-type sum over zeta functions $\sum _{k=2}^{\infty } \frac{\zeta (k)}{k^2}$?
Mar 5, 2020
question
16
Sum=Integral? Find $m$ so that $\sum _{n=1}^{\infty } \frac{n^m}{e^{2 \pi n}-1}=\int_0^{\infty } \frac{x^m}{e^{2 \pi x}-1} \, dx$
Mar 21, 2021
question
16
Closed form for the harmonic approximation sum $\sum _{k=1}^{\infty } \left(H_k^{(2)}-\zeta (2)\right){}^2$
Jan 1, 2018
question
14
Sum of powers of Harmonic Numbers
Sep 6, 2017
answer
14
Sum of powers of Harmonic Numbers
Sep 6, 2017
answer
12
$\sum_{-\infty}^{+\infty}\frac{\exp(-n^2)}{1-4n^2}$ in closed form?
Jun 26, 2018
question
12
Calculate $\sum_{k=1}^{\infty}\frac{|\sin(k x)|}{1+k^2}$
Feb 13, 2021
answer
11
Sum of two velocities is smaller than the speed of light
Oct 24, 2018
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23
Why this real integral yields imaginary results?
20
Mismatch between numerical and analytic evaluation of an integral
18
Is there a built-in function which detects singularities in a function?
17
Strange behaviour of integrals with Cos, Sin, and Exp
17
Find solution of nonlinear ODE in terms of JacobiCN