Seminário Análise Funcional e Aplicações 

02/07/2010, 15:15 — 16:15 — Sala P3.10, Pavilhão de Matemática
Ilya Spitkovsky, College of William and Mary, Williamsburg, Virginia, USA

On some new results in the numerical range theory

We will recall the notion of the numerical range (also known as the field of values), outline its known beautiful properties, and discuss some generalizations and results obtained recently. In particular, the ratio field of values will be treated in detail.