Operators and Matrices · Volume 1, Issue 3 Higher-rank numerical ranges of unitary and normal matrices 01-24 Pages 409-426 DOI 10.7153/oam-01-24 Downloads Short PDF Full PDF PNG Authors Man-Duen Choi John A. Holbrook David W. Kribs Karol Życzkowski Keywords Higher-rank numerical range unitary matrix quantum error correction Subject classes 15A60 15A90 47A12 81P68
