Does the equation in Aphex Twin's "Equation" -song have any real resemblance?
The song's title is:
$$\Delta M_i^{i-1} = - \alpha \sum_{n=1}^N D_i[n]\bigg[ \sum_{j \in C[i]} F_{ji} [n-1] + F ext_i [n^{-1}] \bigg]$$
Intuitively, given the context, one'd expect it to be some sort of DSP formula. But it 1) doesn't give definitions for the contents of $D, F, C$. It also has some weird $ext$-function (unless it's meant to read $Fext$, perhaps "$F$ external").
It does have some resemblance to some sort of signal processing system, because it's a combination of terms and some of the terms rely on "past" observations (the $n-1$ index).
