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arXiv 1409.3281math.FA
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对数Bloch空间上加权复合算子的本质模估计

Essential norm estimates for weighted composition operator on the logarithmic Bloch space

María T. Malavé-RamiÍrez, Julio C. Ramos-Fernández

摘要:

本文利用解析函数$φ$的$n$ -幂和恒等函数的$n$ -幂的范数,估计了作用在对数Bloch空间$\mathcal{B}^{v_{\log}}$上的加权复合算子$W_{u, φ}$的本质范数.同时,我们估计了从$\mathcal{B}^{v_{\log}}$到增长空间$H_{v_{\log}}^{\infty}$的加权复合算子的本质范数。作为结果的一个结果,我们估计了复合算子$C_φ$作用在Logarithmic-Zygmund空间上的本质范数。

英文摘要:

In this article, we estimate the essential norm of weighted composition operator $W_{u, φ}$, acting on the logarithmic Bloch space $\mathcal{B}^{v_{\log}}$, in terms of the $n$-power of the analytic function $φ$ and the norm of the $n$-power of the identity function. Also, we estimate the essential norm of the weighted composition operator from $\mathcal{B}^{v_{\log}}$ into the growth space $H_{v_{\log}}^{\infty}$. As a consequence of our result, we estimate the essential norm of the composition operator $C_φ$ acting on the Logarithmic-Zygmund space.

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