On The Invariance of the Essential Spectrum under a Change of Boundary Conditions of Partial Differential Boundary Operators
- 1 January 1959
- journal article
- Published by Elsevier in Indagationes Mathematicae
- Vol. 62, 142-147
- https://doi.org/10.1016/s1385-7258(59)50016-5
Abstract
No abstract availableThis publication has 2 references indexed in Scilit:
- On the essential spectrum of partial differential boundary problemsCommunications on Pure and Applied Mathematics, 1959
- Perturbation by Changes One-Dimensional Boundary ConditionsIndagationes Mathematicae, 1956