4 citations · 4 across the 2 of their papers we have counts for
3 papers
math.GM2026
General Solutions of the Second-Kind Abel Equation
Ji-Xiang Zhao
The general solutions with free variable to the second-kind Abel equation, a nonlinear ordinary differential equation that has remained unsolved for nearly two centuries, are prese…
nlin.SI2025
The Analytical General Solution of the Riccati Equation and Its Intrinsic Functions
Zhao Ji-Xiang
A sufficient and necessary condition for the integrability of the Riccati equation is established using the f elementary quadrature method. Based on this condition, an analytical g…
astro-ph.CO2024★ 4 cited
An analytical approximation of the evolution of the primordial curvature perturbation in the ultraslow-roll inflation
Ji-Xiang Zhao, Nan Li
Cosmic inflation can enter an ultraslow-roll (USR) stage, if there is a plateau on the inflaton potential. During this stage, the primordial curvature perturbation …