Stack Exchange network consists of 180 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Visit Stack ExchangeMy real name is LI Du.
Ma Ming is my long-time pseudonym on the Internet.
I completed my PhD studies in math at the University of Göttingen, October 2014.
Your privacy
By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.