## Changying Ding

I am a fifth year Ph.D. student in the math department, Vanderbilt University. My advisor is Jesse Peterson. Starting July 2023, I will be working with Sorin Popa and Dimitri Shlyakhtenko as a Hedrick Assistant Adjunct Professor at UCLA. My CV is available here.

I am interested in operator algebras, geometric group theory, ergodic theory and operator space theory.

Publications/Preprints:

1. First $\ell^2$-Betti numbers and proper proximality, arXiv:2211.05951.
2. An upgrading theorem for properly proximal von Neumann algebras (with S. Kunnawalkam Elayavalli), arXiv: 2211.05298.
3. Properly proximal von Neumann algebras (with S. Kunnawalkam Elayavalli and J. Peterson), arXiv: 2204.00517, to appear in Duke Mathematical Journal.
4. Proper proximality for various families of groups (with S. Kunnawalkam Elayavalli), arXiv: 2107.02917.

Contact:

changying.ding@vanderbilt.edu