### About my book

I spent a few months rewriting my book Relativistic Quantum Dynamics. and now I have the

*2nd edition*out. It is much much better than the 1st edition. One important change is that I separated the book into 2 parts. The first part is largely the traditional theory starting from the principle of relativity and ending with the renormalization in QED. The second part has all the new stuff. I analyze the weak points of QED and show how to fix them. I also spent a lot of efforts to make the book more readable, to correct typos and unavoidable errors (signs, missing factors, etc.) in equations. Comments are appreciated.