A Proof of the Riemann Hypothesis Based on A New Expression of the Completed Zeta Function

The completed zeta function \(\xi(s)\) is expanded in MacLaurin series (infinite polynomial), which can be further expressed as infinite product (Hadamard product) of quadratic factors by its complex conjugate zeros \(\alpha_i\pm j\beta_i, \beta_i\neq 0, i\in \mathbb{N}\) (\(\mathbb{N}\) is the set of natural numbers, from $1$ to infinity). Then, according to the functional equation \(\xi(s)=\xi(1-s)\), we have \[\xi(0)\prod_{i=1}^{\infty}\frac{\beta_i^2}{\alpha_i^2+\beta_i^2}\Big{(}1+\frac{(s-\alpha_i)^2}{\beta_i^2}\Big{)} =\xi(0)\prod_{i=1}^{\infty}\frac{\beta_i^2}{\alpha_i^2+\beta_i^2}\Big{(}1+\frac{(1-s-\alpha_i)^2}{\beta_i^2}\Big{)}\] which, by Lemma 3 and Corollary 1, is equivalent to $$(s-\alpha_i)^2 = (1-s-\alpha_i)^2, i \in \mathbb{N}$$ with solution \(\alpha_i= \frac{1}{2}, i\in \mathbb{N}\) (another solution \(s=\frac{1}{2}\) is invalid due to obvious contradiction). Thus, a proof of the Riemann Hypothesis is achieved.