Srinivasa Iyengar Ramanujan was an Indian mathematician 'self taught genius' ... and because I am a 'common mortal' is likely I don't undestand most of his 'mathematical discoveries' ...

Kind regards

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- November 21st 2009, 03:23 AM #1

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## 1+2+3+...=-1/12

Hi, could you explain precisely why

I know it involves applying one of the functional equations of the Riemann Zeta function, but as I'm not too familiar with the zeta function, could you explain in a bit more depth? Our lecturer just rushed through it...

Thanks a lot

- November 21st 2009, 04:31 AM #2

- November 21st 2009, 07:37 AM #3

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Read here: Wapedia - Wiki: Ramanujan summation , and please do pay attention in which sense the above sum is true.

Tonio