| Revue: | Boletim da Sociedade Paranaense de Matematica |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000365967 |
| ISSN: | 0037-8712 |
| Autores: | Crawford Rhaly Jr., Henry |
| Año: | 2013 |
| Volumen: | 31 |
| Número: | 2 |
| Paginación: | 231-234 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | A proof is given that if the lower triangular infinite matrix T acts boundedly on ℓ2 and U is the unilateral shift, the sequence (U )nTUn inherits from T the following properties: posinormality, dominance, M-hyponormality, hyponor- mality, normality, compactness, and noncompactness. Also, it is demonstrated that the upper triangular matrix T is dominant if and only if T is a diagonal matrix |
| Disciplinas: | Matemáticas |
| Palabras clave: | Matemáticas puras, Operador posinormal, Matriz triangular, Operador dominante, Operador compacto |
| Keyword: | Mathematics, Pure mathematics, Posinormal operator, Triangular matrix, Dominant operator, Compact operator |
| Texte intégral: | Texto completo (Ver PDF) |
