by Nguyen D L
•2022年1月4日
I love how Professor Yi introduce me to many ideas in modern physics. I learned to look at problem solving in a whole new way. The Action Principle is so inspiring that I hope would help me in my daily debugging effort at work.
Best regards,
Nguyen Le
by ELMER M P
•2022年9月11日
thank you
by qihan z
•2022年11月22日
very good