2 papers
math.NA2025
OBK-RCM: Accelerated Orthogonal Block Kaczmarz Algorithm via RCM Reordering and Dynamic Grouping for Sparse Linear Systems
Yu-Fang Liang, Hou-Biao Li
Existing block Kaczmarz methods face challenges in balancing computational efficiency and convergence for large sparse linear systems with scattered nonzero patterns, due to costly…
math.NA2025
A note on the growth factor in Gaussian elimination for Higham matrices
Qian-Ping Guo, Xian-Ming Gu, Hou-biao Li
The Higham matrix is a complex symmetric matrix A=B+iC, where both B and C are real, symmetric and positive definite and is the imaginary unit. For any Higha…