2 papers
math.NA2022
Theoretical analysis of the extended cyclic reduction algorithm
Xuhao Diao, Jun Hu, Suna Ma
The extended cyclic reduction algorithm developed by Swarztrauber in 1974 was used to solve the block-tridiagonal linear system. The paper fills in the gap of theoretical results c…
math.NA2020
Preconditioned Legendre spectral Galerkin methods for the non-separable elliptic equation
Xuhao Diao, Jun Hu, Suna Ma
The Legendre spectral Galerkin method of self-adjoint second order elliptic equations usually results in a linear system with a dense and ill-conditioned coefficient matrix. In thi…