An Optimal Least-Square Solver For Scaled Partial-Isometric Linear Systems
Numerical Analysis
2025-07-03 v1 Numerical Analysis
Abstract
We present an direct least-squares solver for linear systems with a scaled partial isometry. The proposed algorithm is also useful when the system is block diagonal and each block is a scaled partial isometry with distinct scaling factors. We also include numerical experiments as a demonstration.
Cite
@article{arxiv.2507.01434,
title = {An Optimal Least-Square Solver For Scaled Partial-Isometric Linear Systems},
author = {Suvendu Kar and Murugesan Venkatapathi},
journal= {arXiv preprint arXiv:2507.01434},
year = {2025}
}