Geodesic
Perturbations by Quadratic Forms and Invariance of Essential Spectra.
Mathematische Zeitschrift, Tome 185 (1984), pp. 281-290.

Voir la notice de l'article provenant de la source European Digital Mathematics Library

Mots-clés : invariance of essential spectra, relative compactness, elliptic regularization, small perturbation 
@article{MZ_1984__185_173402,
     author = {Rainer Hempel},
     title = {Perturbations by {Quadratic} {Forms} and {Invariance} of {Essential} {Spectra.}},
     journal = {Mathematische Zeitschrift},
     pages = {281--290},
     publisher = {mathdoc},
     volume = {185},
     year = {1984},
     zbl = {0514.47011},
     url = {http://geodesic.mathdoc.fr/item/MZ_1984__185_173402/}
}
TY  - JOUR
AU  - Rainer Hempel
TI  - Perturbations by Quadratic Forms and Invariance of Essential Spectra.
JO  - Mathematische Zeitschrift
PY  - 1984
SP  - 281
EP  - 290
VL  - 185
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1984__185_173402/
ID  - MZ_1984__185_173402
ER  - 
%0 Journal Article
%A Rainer Hempel
%T Perturbations by Quadratic Forms and Invariance of Essential Spectra.
%J Mathematische Zeitschrift
%D 1984
%P 281-290
%V 185
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1984__185_173402/
%F MZ_1984__185_173402
Rainer Hempel. Perturbations by Quadratic Forms and Invariance of Essential Spectra.. Mathematische Zeitschrift, Tome 185 (1984), pp. 281-290. http://geodesic.mathdoc.fr/item/MZ_1984__185_173402/