About  余
虽不能至，心向往之。
Here’s a recent photo of me taken by my friend at Wuzhen.
I am currently at Room W915, 567 Yangsi Road (W), Pudong New District, Shanghai.
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.
Trivia
I occasionally serve Omakase menus for my friends at home :)
I also serve Sukiyaki at times, known as Ruaruakawa. Thanks to ScampiBunny for this name.
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 22 Jan 2024.
Research  索
大道汜兮，其可左右。
My research interests lie in probability theory and mathematical physics.
Random geometry
I am interested in imaginary geometry, and its relation to Liouville quantum gravity and conformal field theory.
Spin systems

Currently, I am interested in general spin systems.

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.
Curriculum Vitae  历
凡所有相，皆是虚妄。
Education

Ph.D. candidate in Mathematics
New York University Shanghai & New York University
Advisors: Wei Wu & Nina Holden
Jun. 2021 – current

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

Liouville quantum gravity on the annulus – a matingoftrees approach
Xingjian Di, Nina Holden, Zhenfeng Tu
coming soon, I promise

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
Talks

Correlation Estimates in Spin Systems
Student Probability Seminar, New York University – May 2023

Ising model, SchrammLoewner Evolution and Conformal Field Theory
Student Probaility Seminar, New York University – Nov. 2022
Teaching
I have been the recitation leader for the following courses at NYU Shanghai.
 Ordinary Differential Equations – Spring 2024
I have been the grader for the following courses at NYU.
 Probability Theory II (graduate) – Spring 2023
 Linear Algebra I (graduate) – Fall 2022
Languages
For Binary Beings
 Python  advanced
 C++  advanced
 [most modern OOP languages]  familiar
For NonBinary Beings
 Chinese (Mandarin)  native
 English  advanced
 French  « Je ne parle pas Français! »