What is another infinite series summation for Pi^2/6 besides 1/n^2?

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Discussion Overview

The discussion centers around identifying infinite series summations that equal Pi^2/6, specifically looking for forms that differ from the well-known series involving 1/n^2. Participants explore various series and their characteristics, while also referencing previous discussions on related topics.

Discussion Character

  • Exploratory
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant asks for infinite series summations for Pi^2/6 besides the series $\sum_{n=1}^{\infty} 1/n^2$ and provides examples like $\sum_{n=1}^{\infty} 2(-1)^{(n+1)}/n^2$ and $\sum_{n=1}^{\infty} 4/(2n)^2$.
  • Another participant notes that the series found through Wolfram Alpha still involve squared terms in the denominator and questions if there are any series outside the 1/n^2 family.
  • A participant mentions a previous thread that discussed infinite series summations for 1/5 and 1/7, suggesting that the current thread is focused specifically on Pi^2/6.
  • One participant suggests taking any series that equals 1/5 and multiplying it by $\frac{5\pi^2}{6}$ as a method to generate new series for Pi^2/6.
  • Another participant expresses enthusiasm for deriving new series, indicating that they find the process enjoyable.

Areas of Agreement / Disagreement

Participants express a shared interest in finding alternative series for Pi^2/6, but there is no consensus on specific series outside of the 1/n^2 family. The discussion remains open-ended with various suggestions and inquiries.

Contextual Notes

Some participants reference previous discussions and suggest methods for generating new series, but the limitations of these methods and the scope of the inquiry into alternative series remain unresolved.

mesa
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So the title pretty much says it all, what other infinite series summations do we have for Pi^2/6 besides,

$$\sum_{n=1}^{\infty} 1/n^2$$

***EDIT*** I should also include,

$$\sum_{n=1}^{\infty} 2(-1)^(n+1)/n^2$$
$$\sum_{n=1}^{\infty} 4/(2n)^2$$
etc. etc.

A unique form outside of the 1/n^2 family.
 
Last edited:
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http://www.wolframalpha.com/input/?i=Pi^2%2F6
 
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dipole said:
http://www.wolframalpha.com/input/?i=Pi^2%2F6

Interesting, all of their series still have a 'squared' term for the denominator in some form or another. Do you know of any outside of the 1/n^2 family?

Either way thanks for the link!

Office_Shredder said:
How is this thread different than the one you posted before?

https://www.physicsforums.com/showthread.php?t=730791

That thread was about finding infinite series summations for 1/5 and 1/7 which eventually led to a 'general solution' for all '1/k' fractions for infinite series. This thread is specifically for Pi^2/6 and finding infinite series that are not of the 1/n^2 family.

Hope this helps.
 
mesa said:
That thread was about finding infinite series summations for 1/5 and 1/7 which eventually led to a 'general solution' for all '1/k' fractions for infinite series. This thread is specifically for Pi^2/6 and finding infinite series that are not of the 1/n^2 family.

Hope this helps.

Take any series that equals 1/5 and multiply it by \frac{ 5 \pi^2}{6}.
 
Office_Shredder said:
Take any series that equals 1/5 and multiply it by \frac{ 5 \pi^2}{6}.

Yes, that would do it too...
Do you have anything else besides Boreks standard answer on these things? :)

On a more serious note (sort of), deriving these new series is a blast! I have not encountered any other subject in mathematics that has been more fun!
 
Last edited:

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