About  余
虽不能至，心向往之。
I am currently at Room 710 of Warren Weaver Hall, Courant Institute of Mathematical Sciences, New York.
I can be reached via [my last name]@[my first name].me.
Alternatively, write to [my first name].[my last name]@nyu.edu.
My phone number is +1 (217) 377uv, where u and v are the solutions to the equation x^{2}181x+8190=0, with u>v.
Here’s the link to my personal Zoom meeting room.
Others
Something for my love, and something for my life.
“From the moment I was born, I have never said anything I did not mean.”
Website last updated on 11 Sep 2022.
Research  索
大道汜兮，其可左右。
My research interests lie in probability theory and mathematical physics, spin systems in particular.
I am also interested in cat™ theory.
See here for more information.
Spin systems

Currently, I am interested in the Manhattan pinball problem.

From 2020–2021, I gave an geometric interpretation of the collective dynamics for magnetic solitons with Oleg Tchernyshyov.
Cat™ theory
I study a special cat™, MuonCamus, by observing how she interacts with rest of the world. By the Yoneda lemma, this gives a fully faithful representation of Muon.
Curriculum Vitae  历
凡所有相，皆是虚妄。
Education

Ph.D. student in Mathematics
New York University & New York University Shanghai
Advisor: Wei Wu
Aug. 2021 – current

B.S. in Physics and B.S. LAS in Mathematics
University of Illinois at Urbana–Champaign
Aug. 2017 – May. 2021
Publication

Conserved momenta of ferromagnetic solitons through the prism of differential geometry
Xingjian Di, Oleg Tchernyshyov
SciPost Physics 11, 108 (2021)
DOI: 10.21468/SciPostPhys.11.6.108

Hyperactivation is sufficient to release porcine sperm from immobilized oviduct glycans
Momal Sharif, Vincent Hickl, Gabriel Juarez, Xingjian Di, Karl Kerns, Peter Sutovsky, Nicolai Bovin, David J. Miller
Scientific Reports 12, 6446 (2022)
DOI: 10.1038/s4159802210390x
Languages
For Binary Beings
 Python  advanced
 [most modern OOP languages]  familiar
For NonBinary Beings
 Chinese (Mandarin)  native
 English  advanced
 French  « Je ne parle pas Français! »