Intrinsic characterizations of some classes of operators similar to power partial isometries
We obtain some intrinsic algebraic characterizations of Hilbert space operators which are similar to elements of some classes of power partial isometries. A power partial isometry is a partial isometry, all whose powers are also partial isometries. We study operators which are similar to direct sums...
Elmentve itt :
| Szerző: | |
|---|---|
| Dokumentumtípus: | Cikk |
| Megjelent: |
Bolyai Institute, University of Szeged
Szeged
2008
|
| Sorozat: | Acta scientiarum mathematicarum
74 No. 3-4 |
| Kulcsszavak: | Matematika |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/16263 |
| Tartalmi kivonat: | We obtain some intrinsic algebraic characterizations of Hilbert space operators which are similar to elements of some classes of power partial isometries. A power partial isometry is a partial isometry, all whose powers are also partial isometries. We study operators which are similar to direct sums whose summands are finite sums of truncated shifts, isometries or coisometries, as well as operators similar to subnormal or normal partial isometries. |
|---|---|
| Terjedelem/Fizikai jellemzők: | 643-667 |
| ISSN: | 0001-6969 |