Hi, I was trying to sum the Series S(a)=1+exp(-a^2)+exp(-4a^2)+exp(-9a^2)+... According to the notes where I found it it could be done through Fourier Series. I managed to find a relation between S(a) and S(pi/a), and it works, but I can't find S(a) alone. Can anybody help me find a way to do it? Thank you in advance(adsbygoogle = window.adsbygoogle || []).push({});

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# Summing series through Fourier series

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