Quaternionic Kittaneh Numerical Radius Inequalities
arXiv:2608.00020
Abstract
We show that for certain classes of matrices over quaternions, a more restrictive version of breakthrough numerical radius inequalities obtained by Kittaneh [\textit{{Stud. Math.}, 2005}] hold.
7 Pages, 0 Figures, Quaternionic Crouzeix Problem added