Artículos de revistas
Concrete minimal 3 × 3 Hermitian matrices and some general cases
Fecha
2017-12Registro en:
Klobouk, Abel H.; Varela, Alejandro; Concrete minimal 3 × 3 Hermitian matrices and some general cases; De Gruyter; Demonstratio Mathematica; 50; 1; 12-2017; 330-350
2391-4661
CONICET Digital
CONICET
Autor
Klobouk, Abel H.
Varela, Alejandro
Resumen
Given a Hermitian matrix M ∈ M3(ℂ) we describe explicitly the real diagonal matrices DM such that ║M + DM║ ≤ ║M + D║ for all real diagonal matrices D ∈ M3(ℂ), where ║ · ║ denotes the operator norm. Moreover, we generalize our techniques to some n × n cases.