Separate continuity of the Lempert function of the spectral ball

Abstract

We find all matrices $A$ from the spectral unit ball ${\Omega }_n$ such that the Lempert function $l_{{\Omega }_n}(A,\cdot )$ is continuous.

arXiv commentsmall corrections; one reference is added

References in corpus (1)

• Discontinuity of the Lempert function of the spectral ball