Operators and Matrices · Volume 7, Issue 4 Normal matrix compressions 07-47 Pages 849-864 DOI 10.7153/oam-07-47 Downloads Short PDF Full PDF PNG Authors John A. Holbrook Nishan Mudalige Rajesh Pereira Keywords matrix compression higher-rank numerical ranges interlacing theorems Subject classes 47A12 15A60 15A90 81P68