A numerical range characterization of unitary matrices over a finite field

DOI10.1142/S1793557122500498zbMath1498.15038OpenAlexW3154281301MaRDI QIDQ5865946

Edoardo Ballico

Publication date: 10 June 2022

Published in: Asian-European Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1142/s1793557122500498

zbMATH Keywords

numerical rangefinite fieldunitary matrixHermitian variety over finite field

Mathematics Subject Classification ID

Matrices over special rings (quaternions, finite fields, etc.) (15B33) Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60) Numerical range, numerical radius (47A12)

Cites Work

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• Numerical ranges over finite fields
• On the numerical range of matrices over a finite field
• Degenerate unital intersections in finite projective planes
• Corrigendum to: ``On the numerical range of matrices over a finite field
• Product of operators and numerical range
• Matrix Analysis
• The Hermitian null-range of a matrix over a finite field
• On the numerical range of square matrices with coefficients in a degree 2 Galois field extension

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