I discovered two-element numbers for myself in the second half of 70’s. At that time it was difficult to obtain information about them, because there was no internet. I talked about it at the university ELTE, and I received material on Clifford and Cayley numbers. The two-element numbers, however, were simple, but they were as great and useful as complex numbers. By the way, one of them was just the complex number system. The other one I called hyperbolic numbers, since multiplying the numbers in this system we got the Lorentz transformation, ie, the hyperbolic rotation. The third most simple numbers were the parabolic numbers as I called them, in their system the picture of a product was an offset along a straight line. Thus, by multiplying numbers we got the three major movements: translation, rotation and hyperbolic rotation, ie, the Lorentz transformation.

After registration, you may ask for a translation of the full text by email.