Trace conditions for symmetry of the numerical range Article Sidebar PDF Published: Jan 1, 2013 DOI: https://doi.org/10.13001/1081-3810.1674 Main Article Content Louis Deaett Ramiro H. Lafuente-Rodriguez Juan Marin Jr. Erin Haller Martin Linda J. Patton Kathryn Rasmussen Rebekah B. Johnson Yates Article Details Issue Vol. 26 (2013) Section Article