[math] \newcommand{\mathds}{\mathbb}[/math]

This article was automatically generated from a tex file and may contain conversion errors. If permitted, you may login and edit this article to improve the conversion.

Work out formulae or estimates for the number of circulant complex [math]N\times N[/math] complex Hadamard matrices, at small values of [math]N\in\mathbb N[/math], not prime.