Ryszard Kukulski, Paulina Lewandowska, Lukasz Pawela. Perturbation of the Numerical Range of Unitary Matrices. In Valeria V. Krzhizhanovskaya, Gábor Závodszky, Michael Harold Lees, Jack J. Dongarra, Peter M. A. Sloot, Sérgio Brissos, João Teixeira, editors, Computational Science - ICCS 2020 - 20th International Conference, Amsterdam, The Netherlands, June 3-5, 2020, Proceedings, Part VI. Volume 12142 of Lecture Notes in Computer Science, pages 627-637, Springer, 2020. [doi]
Abstract is missing.