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 Sep 9 accepted How to sum up this series? $\sum_{n=1}^\infty\frac{(-1)^{n-1} B_n}{n}$ Aug 29 accepted What is the sum of this series? $\sum_{n=1}^\infty\frac{\zeta(1-n)(-1)^{n+1}}{2^{n-1}}$ Jun 19 accepted Example of a function that has fractional derivatives of order less than 1 but not 1 May 17 accepted Concerning Hurwitz Zeta function, how to prove the following identity? Apr 25 accepted What do you call the subset of all the Gaussian integers having the smallest magnitude given an argument? Apr 2 accepted How to solve the following equation? $\left(\sqrt{u^2-1}+u\right)^{1/u}=\pi ^{1/\pi }$ Mar 10 accepted What function satisfies the following equation? Jan 17 accepted Evaluate the double integral $\int _0^1\int _0^1\frac{x+i}{(1-ix y) \ln (x y)} \,dx\,dy$ Jan 14 accepted Fourier transform of exponent? Dec 18 accepted In dual numbers, what is the value of expressions $0^\varepsilon$ and $\varepsilon^{\varepsilon}$? Dec 18 accepted In dual numbers, what number is represented by the following matrix? Dec 15 accepted Formula for tangent derivatives, how to prove? Dec 2 accepted What is the substitution to remove integration limit from inside an integral? Oct 31 accepted How to express this operator through derivetives? Aug 23 accepted Is there an easier way to find the “natural” integration constant? Jul 19 accepted Proof or source for this Hurwitz Zeta function identity? Jun 14 accepted Can any analytic function be represented as a sum of a Newton series and a periodic function? Oct 16 accepted Evaluate definite integral $\int_{-1}^1 \exp(1/(x^2-1)) \, dx$ Nov 4 accepted What is the value of $\lim_{x\to 0} x^i$? Oct 27 accepted Limit $\lim_{x\to \infty } \, \frac{x}{\ln (x)-\ln \left(\frac{1}{x}\right)}$