Talk:DFT matrix

Roots of unity

The article says:

The matrix W of size nxn, may be described as a Vandermonde matrix:

$W=V(w)$ where w is a vector $w_{i}=\omega _{n}^{i}$, the nth root of unity.

This strikes me as badly written... surely the vector w isn't the nth root of unity, but rather the vector consisting of each of the nth roots of unity beginning with 1 and progressing around the origin of the complex plane in an anti-clockwise direction? I'm not quite sure that this is right, so don't want to fix it. JulesH 20:09, 20 November 2006 (UTC)