2 papers
math.OC2022
Structured eigenvalue backward errors for rational matrix polynomials with symmetry structures
Anshul Prajapati, Punit Sharma
We derive computable formulas for the structured backward errors of a complex number when considered as an approximate eigenvalue of rational matrix polynomials that carry a sy…
math.OC2022
Doubly structured mapping problems of the form and
Mohit Kumar Baghel, Punit Sharma
For a given class of structured matrices , we find necessary and sufficient conditions on vectors $x,w\in \C^{n+m}$ and $y,z \in \C^{n}$ for which there exists $Δ=[Δ_1~Δ…