Representation Theorems for Indefinite Quadratic Forms Without Spectral Gap
Integral Equations and Operator Theory. Bd. 83. H. 1. Springer Nature 2015 S. 73 - 94
Erscheinungsjahr: 2015
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1007/s00020-015-2252-3
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Inhaltszusammenfassung
The first and second representation theorem for sign-indefinite quadratic forms are extended. We include new cases of unbounded forms associated with operators that do not necessarily have a spectral gap around zero. The kernel of the associated operators is determined for special cases. This extends results by Grubišić et al. (Mathematika 59:169–189, 2013).
Klassifikation
DDC Sachgruppe:
Mathematik
