# Help expanding pi square

1. Oct 25, 2004

### arivero

Lads,

I'd be glad if you were able to take a view of the last developments in the thread https://www.physicsforums.com/showthread.php?t=46055 and see if you can do some suggestion, as we have a pi^2 expresion which should somehow be related to integer pythagorean triples.

2. Oct 25, 2004

### selfAdjoint

Staff Emeritus
Euler proved $$\frac{\pi^2}{6} = \zeta(2)$$

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