3 papers
math.NA2024
A Ï Matrix Based Approximate Inverse Preconditioning for Tempered Fractional Diffusion Equations
Xuan Zhang, Chaojie Wang, Haiyu Liu
Tempered fractional diffusion equations are a crucial class of equations widely applied in many physical fields. In this paper, the Crank-Nicolson method and the tempered weighted…
math.NA2024
Permuted preconditioning for extended saddle point problem arising from Neumann boundary control
Chaojie Wang, Xuan Zhang, Xingding Chen
In this paper, a new block preconditioner is proposed for the saddle point problem arising from the Neumann boundary control problem. In order to deal with the singularity of the s…
math.OC2024
Block triangular preconditioning for elliptic boundary optimal control with mixed boundary conditions
Chaojie Wang
In this paper, preconditioning the saddle point problem arising from the elliptic boundary optimal control problem with mixed boundary conditions is considered. A block triangular…