Qin Yu

works on

fractional powers 1 kernel estimates 1 lorentz spaces 1 schrodinger operators 1 weighted inequalities 1

From the 1 of 3 linked papers with an AI index.

collaborators

3 papers

math.AP2026

Sharp Broken-Power Lorentz Estimates for Fractional Powers of Radial SchrÃ¶dinger Operators with Inverse-Square Asymptotics

Haochen Liu, Qinghao Yu, Hongyan Zhou

The paper derives sharp two‑sided estimates for the kernel of fractional powers of radial Schrödinger operators with inverse‑square type potentials, and provides a complete classif…

math.CA2026

Sharp and Endpoint Two-Weight Fractional Integral Estimates for Schr"odinger Operators with Inverse-Square Potentials

Haochen Liu, Qinghao Yu, Hongyan Zhou

Let $H_{a} = - I^ + a ∣ x ∣^{- 2}$ be the Friedrichs extension on $L^{2} (R^{d})$ , where $d \geq 3$ and $- (d - 2)^{2} /4 \leq a < 0$ lies in the attractive Hardy range. Starting from the known posit…

math-ph2026

A High-Order NystrÃ¶m Method for Coupled Boundary Integral Equations in Oblique-Incidence Scattering by Impedance Cylinders

Haochen Liu, Qinghao Yu

We study the numerical solution of electromagnetic scattering by an infinitely long impedance cylinder under oblique incidence. After separation of the axial phase factor, the axia…