3 papers
math-ph2026
Picard-Lefschetz theory and alien calculus: a case study
Si Li, Yong Li, Xinxing Tang
We compare Picard--Lefschetz theory and resurgence in three basic one-dimensional exponential integrals: the Airy model, the Bessel model, and the Gamma model. On the Picard--Lefsc…
math.CO2026
Path homology of circulant digraphs
Xinxing Tang, Shing-Tung Yau
We organize and extend a set of computations and structural observations about the Grigoryan--Lin--Muranov--Yau (GLMY) path complex of circulant digraphs and circulan…
math.QA2025
Contact Term Algebras and Dijkgraaf's Master Equation
Zhengping Gui, Si Li, Xinxing Tang
This paper is devoted to study integrable deformations of chiral conformal field theories on elliptic curves from the viewpoint of contact algebra. We introduce the relevant integr…