Abstract
The 4-by-4 nilpotent matrices whose numerical ranges have nonparallel flat portions on their boundary that are on lines equidistant from the origin are characterized. Their numerical ranges are always symmetric about a line through the origin and all possible angles between the lines containing the flat portions are attained.
Original language | English (US) |
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Pages (from-to) | 504-523 |
Number of pages | 20 |
Journal | Electronic Journal of Linear Algebra |
Volume | 37 |
DOIs | |
State | Published - 2021 |
Keywords
- Nilpotent matrices
- Numerical ranges
ASJC Scopus subject areas
- Algebra and Number Theory