Professional paper
Compact operators, the essential spectrum and the essential numerical range
D. Bakić
Abstract
Some properties of bounded operators on Hilbert space concerned with matrix representations in orthonormal bases are presented.
In particular, the classes of operators with columns or diagonals converging to 0 are described.
Keywords
Hilbert space; orthonormal basis; bounded operator; compact operator; essential spectrum; essential numerical range
Hrčak ID:
1791
URI
Publication date:
20.6.1998.
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