2 papers
nlin.SI2025
On a matrix constrained CKP hierarchy
Song Li, Kelei Tian, Zhiwei Wu
The algebraic structures of integrable hierarchies play an important role in the study of soliton equations. In this paper, we use splitting theory to give a matrix representation…
math-ph2025
On a class of third order differential equations describing pseudospherical or spherical surfaces
Mingyue Guo, Jing Kang, Zhenhua Shi +1
In this paper, we study third order nonlinear partial differential equations which describe surfaces of constant curvature. From the flatness of connection 1-forms, we present a cl…