Hi there! I am Jeffry, a 21-year-old mathematics researcher. My areas of interest range across group theory, differential topology and data science. I also enjoy [coding](https://github.com/shuxueshuxue) mathematical games and tools. Thank you for visiting my site, and hope you find the content engaging and informative! Email: [email protected] **Friends' Sites:** - [Kaijie Du](https://amithyst.github.io/KaijieDu.github.io/)