Ta-Pei Cheng's relativity and cosmology lectures on YouTube

[robphy]

I was browsing YouTube (again) and stumbled upon this set of lectures by Ta-Pei Cheng.
(I've seen the cover of the textbooks...
but I'm not familiar with the author-lecturer or the details of the texts... but this looks interesting.)

http://www.umsl.edu/~chengt/

https://www.youtube.com/channel/UCodbYw79miRzcIjwybzYfmw/playlists

 

[vanhees71]

I know the book on gauge theory by Cheng and Li which is a good standard textbook.