| Authors | M. Dehghani, S. M. S. Modarres |
|---|---|
| Journal | J. Math. Ext. |
| Page number | 59-68 |
| Serial number | 1 |
| Volume number | 8 |
| Paper Type | Original Research |
| Published At | 2014 |
| Journal Grade | Scientific - research |
| Journal Type | Electronic |
| Journal Country | Iran, Islamic Republic Of |
| Journal Index | ISI |
Abstract
We prove an operator arithmetic-harmonic mean type in-equality in Krein space setting, by using some block matrix techniquesof indefinite type. We also give an example which shows that the oper-ator arithmetic-geometric-harmonic mean inequality for two invertibleselfadjoint operators on Krein spaces is not valid, in general.