Operators and Matrices · Volume 9, Issue 2 Higher rank numerical hulls of matrices and matrix polynomials 09-26 Pages 417-431 DOI 10.7153/oam-09-26 Downloads Short PDF Full PDF PNG Authors Gholamreza Aghamollaei Sharifeh Rezagholi Keywords higher rank numerical range rank-k numerical range joint higher rank numerical range polynomial numerical hull Pauli matrices matrix polynomials Subject classes 15A60 15A18 15A69 47A56 81P68