Stability of the essential spectrum of second-order complex elliptic operators
Ouhabaz, EM ; Stollmann, P
HAL, hal-00694261 / Harvested from HAL
Text on HAL
We prove compactness of the resolvent difference for second order divergence form operators whose matrix functions are close enough at infinity. Our theorems include certain subelliptic cases as well as cases with unbounded coefficients.
Publié le : 1998-07-05
Classification:  [MATH.MATH-MP]Mathematics [math]/Mathematical Physics [math-ph] 
@article{hal-00694261,
     author = {Ouhabaz, EM and Stollmann, P},
     title = {Stability of the essential spectrum of second-order complex elliptic operators},
     journal = {HAL},
     volume = {1998},
     number = {0},
     year = {1998},
     language = {en},
     url = {http://dml.mathdoc.fr/item/hal-00694261}
}

Ouhabaz, EM; Stollmann, P. Stability of the essential spectrum of second-order complex elliptic operators. HAL, Tome 1998 (1998) no. 0, . http://gdmltest.u-ga.fr/item/hal-00694261/