activity
20062026
most citedA unified controllability/observability theory for some stochastic and deterministic partial differential equations

19 citations · 81 across the 40 of their papers we have counts for

collaborators

40 papers

math.PR2026

Numerical Analysis on Backward Stochastic Differential Equations by Finite Transposition Method

Penghui Wang, Yanqing Wang, Xu Zhang

In this paper, we propose a finite transposition method to solve backward stochastic differential equations (BSDEs, for short). Based on the transposition solution theory for BSDEs…

math.OC2025

Null control of heat equations with analytic memory kernels

Qi Lü, Xu Zhang, Enrique Zuazua

We analyze the control properties of heat equations with memory terms. We recall previous results showing that if the moving support of the control covers the whole domain where he…

math.AP2022

The fundamental gap of a kind of two dimensional sub-elliptic operator

Hongli Sun, Donghui Yang, Xu Zhang

This paper is concerned at the minimization fundamental gap problem for a class of two-dimensional degenerate sub-elliptic operators. We establish existence results for weak soluti…

math.OC2021★ 2 cited

Numerics for Stochastic Distributed Parameter Control Systems: a Finite Transposition Method

Qi Lü, Penghui Wang, Yanqing Wang +1

In this chapter, we present some recent progresses on the numerics for stochastic distributed parameter control systems, based on the \emph{finite transposition method} introduced…

math.OC2021★ 1 cited

Verifiable constraint qualifications for infinite-dimensional optimization problems and their applications to optimal control problems

Xu Liu, Qi Lü, Haisen Zhang +1

This paper employs a finite codimensionality condition to establish an enhanced Fritz John condition for general constrained nonlinear infinite-dimensional optimization problems. I…

math.OC2021★ 1 cited

A Concise Introduction to Control Theory for Stochastic Partial Differential Equations

Qi Lü, Xu Zhang

The aim of this notes is to give a concise introduction to control theory for systems governed by stochastic partial differential equations. We shall mainly focus on controllabilit…