735 citations · 977 across the 22 of their papers we have counts for
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math.NA2017★ 9 cited
A constructive approach to Schaeffer's conjecture
Oleg Szehr, Rachid Zarouf
J.J. Schaeffer proved that for induced matrix norm and invertible the inequality \[\left|\det T\right|\left\Vert T^{-1}\right\Vert \leq\mathcal{S}\left\Vert T\…
math.NA2015★ 10 cited
Maximum of the resolvent over matrices with given spectrum
Oleg Szehr, Rachid Zarouf
In numerical analysis it is often necessary to estimate the condition number and the norm of the resolvent of a given $n\tim…
math.NA2014★ 4 cited
Spectral-Variation Bounds in Hyperbolic Geometry
Oleg Szehr, Alexander Müller-Hermes
We derive new estimates for distances between optimal matchings of eigenvalues of non-normal matrices in terms of the norm of their difference. We introduce and estimate a hyperbol…