Riemann sum of a sine function.
42424
Riemann sum of $\sin(x)$
78712
Prove that $\frac{1}{\sin^2 z } = \sum\limits_{n= -\infty} ^ {+\infty} \frac{1}{(z-\pi n)^2} $
20550
Generalized Euler sum $\sum_{n=1}^\infty \frac{H_n}{n^q}$
22657
How to find the sum of the infinite series?
67271
$\sum_{n=-\infty}^{\infty}\frac{1}{(u +n)^2}=\frac{\pi^2}{(\sin \pi u)^2}$
73258
Power series summation
1331
Approximation of the Sine function near $0$
140172
How to compute the Riemann sum of $x^n$ for any positive integer $n$?
34386
Sum of a complex, finite geometric series and its identity
65362
Does $\sum{\frac{\sin{(nx)}}{n}}$ converge uniformly for all $x$ in $[0,2\pi]$
2981
Evaluating $\zeta(0)$ using the functional equation of Riemann-Zeta function.
150971
If $f$ is Riemann integrable on $[0,1]$ then $\lim\limits_{n\rightarrow\infty}\frac{1}{n}\sum f\left(\frac{k}{n}\right)=\int\limits_{0}^{1} f(x)dx$
149360
convergence of $ \sum_{k=1}^\infty \sin^2(\frac 1 k)$
52774
Computing an infinite sum using the Residue theorem
133099
Decomposition of holomorphic function as a sum of entire functions
52987
$\sum_{n=-\infty}^{\infty}\frac{1}{(n+\alpha)^2}=\frac{\pi^2}{(\sin \pi \alpha)^2}$?
57677
Decomposition of Harmonic function into sum of holomorphic and anti-holomorphic function