Title of article
Higher-rank numerical ranges and compression problems
Author/Authors
Man-Duen Choi، نويسنده , , David W. Kribs، نويسنده , , Karol ?yczkowski، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
12
From page
828
To page
839
Abstract
We consider higher-rank versions of the standard numerical range for matrices. A central motivation for this investigation comes from quantum error correction. We develop the basic structure theory for the higher-rank numerical ranges, and give a complete description in the Hermitian case. We also consider associated projection compression problems.
Keywords
dilations , Compression-values , Quantum error correction , Hilbert space , Hermitian matrices , Higher-rank numerical range , Normal matrices
Journal title
Linear Algebra and its Applications
Serial Year
2006
Journal title
Linear Algebra and its Applications
Record number
825326
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