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20122026
most citedPerturbation Bounds for Quantum Markov Processes and their Fixed Points

30 citations · 33 across the 8 of their papers we have counts for

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math.FA2026

Schäffer's matrix inequality: the exact asymptotic constant

Samy Houache, Oleg Szehr, Rachid Zarouf

Let denote the smallest constant such that \[ |\det T|\|T^{-1}\| \leq S_n \|T\|^{n-1} \] for every invertible operator on every -dimensional complex Banach space. In H…

math.FA2020

Interpolation without commutants

Oleg Szehr, Rachid Zarouf

We introduce a "dual-space approach" to mixed Nevanlinna-Pick/Carathéodory-Schur interpolation in Banach spaces X of holomorphic functions on the disk. Our approach can be viewed a…