Qianyun Wang

activity

20142026

collaborators

3 papers

math.CV2026

Analytic discs and compactness of the $\partial ˉ$ -Neumann operator

Qianyun Wang, Yuan Yuan, Xu Zhang

We construct a bounded pseudoconvex complete Reinhardt domain $Ω$ with smooth boundary in $C^{3}$ such that the $\partial ˉ$ -Neumann operator $N_{1}$ is compact although $bΩ…

math.CV2025

Sobolev regularity for the $\partial$ -Neumann operator and transverse vector fields

Qianyun Wang, Yuan Yuan, Xu Zhang

On a bounded smooth pseudoconvex domain in $C^{n}$ with $n > 2$ , inspired by the compactness condition introduced by Yue Zhang, we present the new sufficient condition for th…

cond-mat.str-el2014

Exact solutions of an extended Bose-Hubbard model with E2 symmetry

Feng Pan, Ningyun Zhang, Qianyun Wang +1

An extended Bose-Hubbard (BH) model with number-dependent multi-site and infinite-range hopping is proposed, which, similar to the original BH model, describes a phase transition b…

Analytic discs and compactness of the ∂ˉ-Neumann operator

Sobolev regularity for the ∂-Neumann operator and transverse vector fields

Exact solutions of an extended Bose-Hubbard model with E2 symmetry

Analytic discs and compactness of the $\partial ˉ$ -Neumann operator

Sobolev regularity for the $\partial$ -Neumann operator and transverse vector fields