Inequalities of von Neumann Type for Small Matrices
John Holbrook · 2020
The examples created by N. Varopoulos [ V ] put an end to the hopes for a general von Neumann inequality: 1.1 https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003066804/68248f03-b1e5-4aad-bed8-c85626fd9efb/content/equ17_1_1.tif"/>