22 Apr
2015
22 Apr
'15
8:10 a.m.
On 4/22/15, Warren D Smith <warren.wds@gmail.com> wrote:
For approximating a function of D variables, the typical fourier series is
SUM_A B_A * exp(i*X*A)
where X=(x1,x2,...,xD) is the coordinate-vector, and A=(a1,a2,...,aD) is a vector of integers, and B_A is a real coefficient.
--or complex coefficient.