We present a survey of some recent results concerning joint numerical ranges of n-tuples of
Hilbert space operators, accompanied with several new observations and remarks …

We identify subsets of the joint numerical range of an operator tuple in terms of its joint
spectrum. This result helps us to transfer weak convergence of operator orbits into certain …

We identify subsets of the joint numerical range of an operator tuple in terms of its joint
spectrum. This result helps us to transfer weak convergence of operator orbits into certain …

Research in higher rank numerical ranges has originally been motivated by problems in
quantum information theory, particularly in quantum error correction. The higher rank …

In this note we present a brief and sketchy description of the linear algebra activity in Mexico
during the last forty years. We begin with some comments about the history of the academic …