Subject
Discrete Mathematics and Combinatorics,Geometry and Topology,Numerical Analysis,Algebra and Number Theory
Reference4 articles.
1. Hyponormal 2 × 2 matrices are subnormal;Friedberg;Linear Algebra Appl.,1992
2. Characterizations of subnormal matrices;Friedberg;Linear Algebra Appl.,1995
3. Subnormal operators and the subdiscrete topology;Halmos,1984
4. A characterization of unitary congruence;Hong;Linear and Multilinear Algebra,1984