Volume 30, 2024, Number 3 (Online First)
Volume 30 ▶ Number 1 ▷ Number 2 ▷ Number 3 (Online First)
- Volume opened: 25 August 2024
- Status: In progress
Euler sine product and the continued fraction of π
Original research paper. Pages 463–478
Rahul Verma, V. Puneeth, Joseph Varghese Kureethara and Ashish Sharma
Full paper (PDF, 3702 Kb) | Abstract
The Euler sine product and the continued fraction of
![Rendered by QuickLaTeX.com \pi](https://nntdm.net/wp-content/ql-cache/quicklatex.com-26d6788550ffd50fe94542bb3e8ee615_l3.png)
are discussed in this article. Some of the infinite series for cotangent and its derivative are obtained by implementing the concept of Euler sine product and some of the standard series are derived as the immediate consequence of the main results. Furthermore, the continued fraction for odd powers of
![Rendered by QuickLaTeX.com \pi](https://nntdm.net/wp-content/ql-cache/quicklatex.com-26d6788550ffd50fe94542bb3e8ee615_l3.png)
similar to the expression of
![Rendered by QuickLaTeX.com \pi](https://nntdm.net/wp-content/ql-cache/quicklatex.com-26d6788550ffd50fe94542bb3e8ee615_l3.png)
derived by Brouncker is presented in this article. Meanwhile, an expression relating the Basel’s constant and the cotangent function is obtained as follows:
![Rendered by QuickLaTeX.com \begin{equation*} \frac{\coth{r}}{2}-\frac{1}{2r}=\sum_{n\in\mathbb{N}}\frac{2^{2n}}{2(2n)!}B_{2n}r^{2n-1}. \end{equation*}](https://nntdm.net/wp-content/ql-cache/quicklatex.com-8b347b083bb2d04f0f6f489b10c70354_l3.png)