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Fine spectra of the discrete generalized Cesàro operator on Banach sequence spaces
Monatshefte für Mathematik ( IF 0.8 ) Pub Date : 2020-02-07 , DOI: 10.1007/s00605-020-01376-w
Yoshihiro Sawano , Saad R. El-Shabrawy

This paper concerns the spectrum and the fine spectrum of the discrete generalized Cesàro operator $$C_{t}$$ C t , where $$0\le t<1$$ 0 ≤ t < 1 , on Banach sequence spaces close to $$\ell ^{1}$$ ℓ 1 and $$\ell ^{\infty }$$ ℓ ∞ . We derive some compactness results for the operator $$C_{t}$$ C t to describe the spectrum. Our technique involves standard operator theory and summability theory.

中文翻译:

Banach序列空间上离散广义Cesàro算子的精细谱

本文涉及离散广义 Cesàro 算子 $$C_{t}$$C t 的谱和精细谱,其中 $$0\le t<1$$ 0 ≤ t < 1 ,在接近 $$ 的 Banach 序列空间上\ell ^{1}$$ ℓ 1 和 $$\ell ^{\infty }$$ ℓ ∞ 。我们为算子$$C_{t}$$C t 推导出一些紧凑性结果来描述频谱。我们的技术涉及标准算子理论和可和性理论。
更新日期:2020-02-07
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