Fei Xue

collaborators

4 papers

cs.RO2026

RoboRender: Robot-Oriented Video Generation for Visual Sim-to-Real Transfer

Huang Huang, Wensi Ai, Ziyu Chen +6

Simulation enables large-scale, low-cost robot data generation, but policies trained in simulation often fail to transfer to the real world due to the sim-to-real visual discrepanc…

math.NA2026

Convergence of repeated-pole rational approximation of the exponential on infinite sectors

Fei Xue, Tianqi Zhang

For $h > 0$ , degree $m \geq 0$ , $0 \leq β < π$ , and $q > 0$ , let $Σ_{β} = {r e^{i θ} : r \geq 0, ∣ θ ∣ \leq β /2}$ and let $E_{m, β} (q)$ denote the best uniform error for approximating $e^{- h z}$ on $Σ_{β}$ by…

math.NA2026

Uniform Chebyshev asymptotics for repeated-pole rational approximation of the exponential

Fei Xue, Tianqi Zhang

We study uniform approximation of $exp (t z)$ , $t > 0$ , on $(- \infty, 0]$ by rational functions $P_{m} (z) / (q_{m} - z)^{m}$ with a prescribed repeated pole $q_{m} > 0$ . A Möbius transformation redu…

math.NA2026

Fixed-Grid Reversibility of High-Order Splittings for Nonlinear Schrödinger Equations with Arbitrary-Axis 3D Rotation

Tianqi Zhang, Fei Xue

High-order splittings for rotational nonlinear Schrödinger equations may use an exact continuous factorization of the Laplace--rotation flow, but its fixed-grid Fourier realization…