# Complex Analysis finding a sum

1. May 11, 2004

### yxgao

Anyone know how to find a sum of a function using the poisson summation formula and the fourier transform. Thanks!
--yxgao

Last edited: May 18, 2004
2. May 12, 2004

### ReyChiquito

Its easier with calculus of residues, u can see a detailed explanation in the texts of Marsden or Churchill, or any other complex variable books i guess...