Difference between revisions of "Dirichlet eta"

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Let $\mathrm{Re} \hspace{2pt} z > 0$, then define
 
Let $\mathrm{Re} \hspace{2pt} z > 0$, then define
$$\eta(z) = \displaystyle\sum_{n=1}^{\infty} \dfrac{(-1)^{n-1}}{n^s}.$$
+
$$\eta(z) = \displaystyle\sum_{n=1}^{\infty} \dfrac{(-1)^{n-1}}{n^z}.$$
This series is clearly the [[Riemann zeta function]] with alternating terms.
 
  
 
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Latest revision as of 20:58, 5 November 2017

Let $\mathrm{Re} \hspace{2pt} z > 0$, then define $$\eta(z) = \displaystyle\sum_{n=1}^{\infty} \dfrac{(-1)^{n-1}}{n^z}.$$

See Also

Riemann zeta