Hi, I am Strongart, I am a young mathematician in China. I study maths by myself and make some videos to teach commutative algebra, functional analysis and other topics at the internet just like the Khan Academy and MIT open courses. Some weeks ago, I found the CR-geometry from the MSRI online videos, why do I care it? Because I got some similar ideals one years ago.

When I read a book about several complex variables, a Russian book translated by Chinese, I try to compare some...