On december 1st, 2019 I added a page, a 'book' on Complex numbers.

Euler's formula is derived in an intuitive way. The derivation may not be elegant, everybody will be able to understand it.

The step to modelling a system is made too, and it is explained why one can easily step from a complex transfer function to the real function.

The section on Linear Transformations intuitively builds from the elementary operations like rotation and scaling all the way to the singular value decomposition (SVD).

The descriptions are limited to 2x2-matrices.

This allows a strightforward visualization and it allows the reader to calculate examples by hand.

What is rather unique in the material on this website, is the use of eigencircles to support the understanding by visualizing properties of matrices or linear transformations.

There is so little literature on eigencircles, that Wikipedia does not want to publish articles on the subject.

Eigencircles now have their own little subsite: eigencircles.heavisidesdinner.com.

A few examples have been constructed in Geogebra. They are publicly available on the Geogebra-website and in the Figures page.

If you really want to find eigencircles on the web, look for the authors: Englefield and Farr.

I created the website because I am convinced the content can help students, or simply interested readers, looking for insight.

The material is too elementary to be published in an article and not sufficiently encyclopedic for Wikipedia.

Just the fact of taking another point of view can help the reader in really mastering the subject.

I look forward to your response on: bart@heavisidesdinner.com.