百晓学者学者目录

杨冉

副教授、硕士生导师，东华理工大学

精选作品

期刊论文

2025

The Morse Index Theorem of Saddle Point Reduction and Applications to the Boundary Value Problems of Hamiltonian Systems on the Half Line

Ran Yang, Qin Xing

Journal of Nonlinear Mathematical Physics

DOI

2025

Morse index of circular solutions for repulsive central force problems on surfaces

Ran Yang

Open Mathematics

DOI

2024

Morse Thoery of Saddle Point Reduction with Applications

Ran Yang, Qin Xing

Axioms

DOI

2019

拉格朗日系统的莫尔斯指标理论

杨冉

《山东大学》

预印本

2025

Instability of the Standing Pulse in Skew-Gradient Systems and Its Application to FitzHugh-Nagumo Type Systems

Jing Li, Qin Xing, Ran Yang

arXiv preprint

2025

Morse Index Theorem for Sturm-Liouville Operators on the Real Line

Ran Yang, Qin Xing

arXiv preprint

2023

Morse index of circular solutions for attractive central force problems on surfaces

Stefano Baranzini, Alessandro Portaluri, Ran Yang

arXiv preprint

2023

A generalized index theory for non-Hamiltonian system

Alessandro Portaluri, Li Wu, Ran Yang

arXiv preprint

2021

Linear instability of periodic orbits of free period Lagrangian systems

Alessandro Portaluri, Li Wu, Ran Yang

arXiv preprint

2019

Linear instability for periodic orbits of non-autonomous Lagrangian systems

Alessandro Portaluri, Li Wu, Ran Yang

arXiv preprint

2018

Morse Index Theorem of Lagrangian Systems and Stability of Brake Orbit

Xijun Hu, Li Wu, Ran Yang

arXiv preprint

2017

Instability of semi-Riemannian closed geodesics

Xijun Hu, Alessandro Portaluri, Ran Yang

arXiv preprint

2017

A dihedral Bott-type iteration formula and stability of symmetric periodic orbits

Xijun Hu, Alessandro Portaluri, Ran Yang

arXiv preprint

研究方向

拉格朗日系统莫尔斯指标理论及应用

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