2 papers
quant-ph2026
Quantum Krylov Linear Solving Beyond Global Conditioning via Spectral Compression and Directional Stability
Sijia Yu, Yifan Zhou
Global condition-number dependence can substantially overestimate the difficulty of preparing normalized quantum linear-system solutions. Many existing beyond-conditioning approach…
math.RA2026
Unitary-Invariant Decomposition of Reducible Total Least Squares Core Problems
Sijia Yu, Bruno Carpentieri, Yan-Fei Jing
The analysis of a total least square problem (TLS) can be reduced to that of an associated core problem, which typically has lower dimension and improved solubility properties. Nev…