Wei Qu
Shaoguan University
10 Papers
18 Citations
Wei Qu is an academic researcher from Shaoguan University. The author has contributed to research in topics: Rate of convergence & Circulant matrix. The author has an hindex of 4, co-authored 5 publications. Previous affiliations of Wei Qu include Macau University of Science and Technology & University of Macau.
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Papers
On τ-preconditioner for a novel fourth-order difference scheme of two-dimensional Riesz space-fractional diffusion equations
TL;DR: In this article , a τ-preconditioner for a novel fourth-order finite difference scheme of two-dimensional Riesz space-fractional diffusion equations (2D RSFDEs) is considered, in which a fourthorder fractional centered difference operator is adopted for the discretizations of spatial RIESz fractional derivatives, while the Crank-Nicolson method is adopted to discretize the temporal derivative.
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A non-modulus linear method for solving the linear complementarity problem
Hua Zheng,Wen Li,Wei Qu,Wei Qu +3 more
TL;DR: In this article, a non-modulus linear method for solving the linear complementarity problem is established by using the sign patterns of the solution of the equivalent modulus equation, which can be applied to the large sparse problems.
9
A note on the stability of a second order finite difference scheme for space fractional diffusion equations
TL;DR: The unconditional stability of a second order finite difference scheme for space fractional diffusion equations is proved theoretically for a class of variable diffusion coefficients in this article, and the scheme is unconditionally stable for all one-sided problems and problems with Riesz fractional derivative.
8
Adaptive Fourier decomposition‐type sparse representations versus the Karhunen–Loève expansion for decomposing stochastic processes
TL;DR: In this paper , the adaptive Fourier decomposition (AFD)-based methods for random fields and stochastic processes have been studied and compared with the Karhunen-Loève (KLoeve) expansion.
7
An unconditionally convergent RSCSCS iteration method for Riesz space fractional diffusion equations with variable coefficients
Zihang She,Lin Qiu,Wei Qu +2 more
TL;DR: In this article , a respectively scaled circulant and skew-circulant splitting (RSCSCS) iteration method is employed to solve the Toeplitz-like linear systems arising from time-dependent Riesz space fractional diffusion equations with variable coefficients.
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