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检索条件"主题词=compact operators"
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CHARACTERIZATIONS OF compact operators ON SOME EULER SPACES OF DIFFERENCE SEQUENCES OF ORDER m
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Acta Mathematica Scientia 2011年 第4期31卷 1465-1474页
作者: Ivana Djolovi Eberhard Malkowsky Technical Faculty University of Belgrade Department of Mathematics Faculty of Science Fatih University
In the past, several authors studied spaces of m-th order difference sequences, among them, *** and *** ([17]) defined the Euler spaces of m-th order difference sequences e r 0 (△ ( m ) ), e r c (△ ( m ) )... 详细信息
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Quantitative Characterizations of Bounded compact Approximation Property by Semi-Fredholm operators
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Acta Mathematica Sinica,English Series 2023年 第6期39卷 1115-1128页
作者: Dong Yang CHEN Ying Bin RUAN School of Mathematical Sciences Xiamen UniversityXiamen 361005P.R.China School of Mathematics and Statistics Fujian Normal UniversityFuzhou 350007P.R.China
Based on a characterization of upper semi-Fredholm operators due to *** and ***,we introduce and investigate a new quantity characterizing upper semi-Fredholm *** quantity and several well-known quantities are used to... 详细信息
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Von Neumann Algebras Associated with the Group SL2(R)
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Acta Mathematica Sinica,English Series 2011年 第9期27卷 1697-1704页
作者: Wen Ming WU School of Mathematics and Computer Science Operations Research Laboratory Chongqing Normal University Chongqing 400047 P. R. China
Let M and N be the yon Neumann algebras induced by the rational action of the group SL2(R) and its subgroup P on the upper half plane H. We have shown that N is spatial isomorphic to the group von Neumann algebra L... 详细信息
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Similarity orbits in the Calkin algebra
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Science China Mathematics 2011年 第6期54卷 1225-1232页
作者: ZHU Sen JI YouQing Department of Mathematics Jilin University Changchun 130012 China
Let B(H) be the algebra of all bounded linear operators on a complex separable infinite dimensional Hilbert space *** by π the quotient map of B(H) onto the Calkin algebra A(H).In 1984,Apostol et *** the following co... 详细信息
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