An example of what I am trying to understand is found on this page, at Eq. 3.
There are two braces under the equation... What is the definition of the brace(s) and how does it relate to Sp(t) and S[k]? This is what 4 years of calculus gets you 20+ years later...
http://en.wikipedia.org/wiki/Poisson_summation_formula
Thanks