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**A sum is always equal to an integral........**

i think i have proved finally that fact..that a series can always be substituted by an integral..

S(0,Infinite)f(n)=I(R)f(x)W(x)dx ..where I(R) means that the integration limits are from -infinite to infinite..and w(x) is a function that is defined as the inverse fourier transform of 1/1-exp(-s).

Hope it can be useful......... if sugerences feel free to post..