Transition to (c+v) (c-v) mathematics in The Electromagnetic Theory will happen in time in one way or another. I have no doubt on this topic. With this transition, an important question will become a current issue in the science of physics spontaneously What is the reason that electromagnetic waves behave in accordance with the rules of (c+v) (c-v) mathematics? This is a disturbing question that will inevitably occupy the agenda. 

While covering (c+v) (c-v) mathematics and its results in Chapter I, I tried my best not to talk about the answer to the question Why do electromagnetic waves behave like this? and limited myself in all my statements because it is possible to reach the mathematical results I showed you without needing any additional theoretical explanation.

In the future, many researchers will study the answer to the question Why does (c+v) (c-v) mathematics exist in nature? and will establish different theories and develop different ideas. Of course, this question has always been on my agenda as well. I also have some thoughts and ideas on this matter. You will find those ideas in this chapter. I hope the things I wrote here will shed some light and serve as a guide.