An optimal preconditioner for a high-order scheme arising from multi-dimensional Riesz space fractional diffusion equations with variable coefficients

Keyphrases

• Equations with Variable Coefficients 100%
• High-order Schemes 100%
• Riesz Space Fractional Diffusion Equation 100%
• Optimal Preconditioner 100%
• Computational Efficiency 50%
• Numerical Examples 50%
• Novel Technique 50%
• Fourth Order 50%
• Convergence Rate 50%
• Toeplitz 50%
• Conjugate Gradient Method 50%
• Superior Performance 50%
• Mesh Size 50%
• L2 Norm 50%
• Coefficient Matrix 50%
• Unconditionally Stable 50%
• Temporal Discretization 50%
• Spatial Discretization 50%
• Fourth-order Accuracy 50%
• Time Order 50%
• Second-order Accuracy 50%
• Size-independent 50%
• Sine Transform Based Preconditioner 50%
• Fractional Centered Difference 50%
• Discrete-time Linear Systems 50%

Mathematics

• Multidimensional Case 50%