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7 papers

math.NA2026

A Fourier-Aware Projection-Based Periodic Parareal Method for Time-Periodic Problems

Chenyi Tan, Yuncheng Xu, Yehao Zhang +1

The paper introduces a Fourier‑aware projection technique to speed up the periodic parareal algorithm for solving time‑periodic problems, providing convergence analysis and demonst…

math.AP2026

Existence of pure capillary solitary waves in constant vorticity flows

Ting-Yang Hsiao, Zhengjun Liang, Giang To +1

We prove that the finite-depth pure-capillary rigidity mechanism in the irrotational water-wave problem is destroyed by a suitable constant-vorticity critical shear. More precisely…

math.NA2026

Multistep Methods for Floquet Multipliers and Subspaces

Yehao Zhang, Yuncheng Xu, Chenyi Tan +1

Accurate and efficient computation of Floquet multipliers and subspaces is essential for analyzing limit cycle in dynamical systems and periodic steady state in Radio Frequency sim…

cs.MA2025

Nash Equilibrium and Belief Evolution in Differential Games

Jiangjing Zhou, Ovanes Petrosian, Ye Zhang +1

This study investigates differential games with motion-payoff uncertainty in continuous-time settings. We propose a framework where players update their beliefs about uncertain par…

math.NA2025

Deep asymptotic expansion method for solving singularly perturbed time-dependent reaction-advection-diffusion equations

Qiao Zhu, Dmitrii Chaikovskii, Bangti Jin +1

Physics-informed neural network (PINN) has shown great potential in solving partial differential equations. However, it faces challenges when dealing with problems involving steep…

math.NA2025

Internal layer solutions and coefficient recovery in time-periodic reaction-diffusion-advection equations

Dmitrii Chaikovskii, Ye Zhang, Aleksei Liubavin

This article investigates the non-stationary reaction-diffusion-advection equation, emphasizing solutions with internal layers and the associated inverse problems. We examine a non…