The \(c\)-numerical range of a quaternion skew-Hermitian matrix is convex

DOI10.1007/s43036-024-00391-0MaRDI QIDQ6646854

Hugo J. Woerdeman, Alma van der Merwe, Madelein Thiersen

Publication date: 3 December 2024

Published in: Advances in Operator Theory (Search for Journal in Brave)

zbMATH Keywords

convexityskew-Hermitianquaternion \(c\)-numerical range

Mathematics Subject Classification ID

Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60) Numerical range, numerical radius (47A12) Quadratic and bilinear forms, inner products (15A63)

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