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Hyponormal 2 × 2 matrices are subnormal

✍ Scribed by Stephen H. Friedberg; Arnold J. Insel

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
394 KB
Volume
175
Category
Article
ISSN
0024-3795

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📜 SIMILAR VOLUMES

Invariants of 2×2-Matrices over Finite F
Invariants of 2×2-Matrices over Finite Fields
✍ Larry Smith 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 114 KB

Let F q be the finite field with q elements, q ¼ p n ; p 2 N a prime, and Mat 2:2 ðF q Þ the vector space of 2 Â 2-matrices over F. The group GLð2; FÞ acts on Mat 2;2 ðF q Þ by conjugation. In this note, we determine the invariants of this action. In contrast to the case of an infinite field, where