Thanks (and thanks to the other replies !). So a complex number has a single representation when using real and imaginary parts, but an infinity of representati

Thanks (and thanks to the other replies !). So a complex number has a single representation when using real and imaginary parts, but an infinity of representations if you use angle and magnitude (just add or subtract 2π radians). I guess that should have been clear from the article, I just needed to sleep on it.