Linear maps preserving the minimum and reduced minimum moduli期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Linear maps preserving the minimum and reduced minimum moduli

Authors:	A. Bourhim M. Burgos V.S. Shulman

Affiliation:	^a Département de Mathématiques et de Statistique, Université Laval, Québec (Québec), Canada G1K 7P4 ^b Departamento de Análisis Matemático, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain ^c Department of Mathematics, Vologda State Technical University, Vologda, Russia

Abstract:	We describe linear maps from a C^∗-algebra onto another one preserving different spectral quantities such as the minimum modulus, the surjectivity modulus, and the reduced minimum modulus.

Keywords:	mmlsi2" onclick=" submitCitation('/science?_ob=MathURL& _method=retrieve& _eid=1-s2.0-S0022123609004066& _mathId=si2.gif& _pii=S0022123609004066& _issn=00221236& _acct=C000053510& _version=1& _userid=1524097& md5=b9ab4f55cf128364f3c502f48dbdabb8')" style=" cursor:pointer " alt=" Click to view the MathML source" title=" Click to view the MathML source" > formulatext" title=" click to view the MathML source" >C^&lowast -algebras Linear preserver problems Minimum modulus Surjectivity modulus Reduced minimum modulus
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