SURJECTIVE NUMERICAL RADIUS ISOMETRY ON $S(\mathcal{H}_n)$
Bing Li, Ai-sheng Xia, Bao-an Hu · 2014
In this article, we study the numerical radius isometry on matrix spaces. By using isometric embedding, we obtain surjective numerical radius isometry from the unit sphere of self-adjoint matrix space onto itself can be real-linear extended to the whole space, and give a method of Tingley isometric extension problem.