1

The Gaps in the Essential Spectra of Wave Equations

Year:
1950
Language:
english
File:
PDF, 806 KB
english, 1950
2

The Orthogonal Group in Hilbert Space

Year:
1952
Language:
english
File:
PDF, 1.71 MB
english, 1952
4

The essential spectrum and averages of the potential

Year:
1956
Language:
english
File:
PDF, 665 KB
english, 1956
5

potentials

Year:
1956
Language:
english
File:
PDF, 841 KB
english, 1956