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20242026
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math.AP2026

Convergence Rate of Birkhoff Average for Toral Quasi-Periodic Rotations and Applications

Son N. T. Tu, Jianlu Zhang, Siyao Zhu

In this paper, we establish quantitative Denjoy--Koksma type estimates for higher-dimensional quasi-periodic torus rotations. For Diophantine frequency vectors, we establish quanti…

math.AP2026

Quantitative homogenization for static contact Hamilton-Jacobi equations

Gengyu Liu, Son N. T. Tu, Jianlu Zhang

We characterize possible pairs addressing the homogenization problem for Hamilton…

math.AP2025

Vanishing discount limits for first-order fully nonlinear Hamilton-Jacobi equations on noncompact domains

Son N. T. Tu, Jianlu Zhang

We study the asymptotic behavior of solutions to the fully nonlinear Hamilton-Jacobi equation in as . Under the assumption that the Au…

math.AP2024

Polynomial Convergence Rate for Quasi-Periodic Homogenization of Hamilton-Jacobi Equations and Application to Ergodic Estimates

Bingyang Hu, Son N. T. Tu, Jianlu Zhang

In this paper, we demonstrate a polynomial convergence rate for homogenization of Hamilton-Jacobi equations with quasi-periodic potentials. We establish a connection between the co…

math.AP2024

On the regularity of stochastic effective Hamiltonian

Son Tu, Jianlu Zhang

In this paper, we study the regularity of the ergodic constants for the viscous Hamilton--Jacobi equations. We also estimate the convergent rate of the ergodic constant in the vani…