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Characterizations of continuous operators on $$C_b(X)$$ C b ( X ) with the strict topology
Annals of Functional Analysis ( IF 1 ) Pub Date : 2021-02-16 , DOI: 10.1007/s43034-021-00112-1
Marian Nowak , Juliusz Stochmal

Let X be a completely regular Hausdorff space and \(C_b(X)\) be the space of all bounded continuous functions on X, equipped with the strict topology \(\beta \). We study some important classes of \((\beta ,\Vert \cdot \Vert _E)\)-continuous linear operators from \(C_b(X)\) to a Banach space \((E,\Vert \cdot \Vert _E)\): \(\beta \)-absolutely summing operators, compact operators and \(\beta \)-nuclear operators. We characterize compact operators and \(\beta \)-nuclear operators in terms of their representing measures. It is shown that dominated operators and \(\beta \)-absolutely summing operators \(T:C_b(X)\rightarrow E\) coincide and if, in particular, E has the Radon–Nikodym property, then \(\beta \)-absolutely summing operators and \(\beta \)-nuclear operators coincide. We generalize the classical theorems of Pietsch, Tong and Uhl concerning the relationships between absolutely summing, dominated, nuclear and compact operators on the Banach space C(X), where X is a compact Hausdorff space.



中文翻译:

具有严格拓扑的$$ C_b(X)$$ C b(X)上连续算子的特征

X是完全正豪斯多夫空间和\(C_B(X)\)是对所有有界连续函数的空间X,配备了严格的拓扑结构\(\测试\) 。我们研究了\((\ beta,\ Vert \ cdot \ Vert _E)\)的一些重要类-从\(C_b(X)\)到Banach空间\((E,\ Vert \ cdot \ Vert _E)\)\(\ beta \)-绝对求和运算符,紧凑型运算符和\(\ beta \)-核运算符。我们根据其表示度量来表征紧凑算子和\(\ beta \)核算子。结果表明,主导运营商和\(\ beta \)-绝对求和运算符\(T:C_b(X)\ rightarrow E \)重合,并且特别是如果E具有Radon–Nikodym属性,则\(\ beta \)-绝对求和运算符和\(\ beta \)-核运算符重合。我们推广了Pietsch,Tong和Uhl的经典定理,涉及Banach空间CX)上绝对求和,支配,核和紧凑算子之间的关系,其中X是紧凑的Hausdorff空间。

更新日期:2021-02-16
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