Practical Restrictively Preconditioned Conjugate Gradient Methods for a Class of Block Two-by-Two Linear Systems
Fang Chen, Shu-Ru He
Practical Restrictively Preconditioned Conjugate Gradient Methods for a Class of Block Two-by-Two Linear Systems
Fang Chen, Shu-Ru He
Communications on Applied Mathematics and Computation . 2025, (5): 1639 -1651 .  DOI: 10.1007/s42967-023-00356-9

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