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arXiv 1109.3285math.FA
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平移不变空间的框架构造

Construction of frames for shift-invariant spaces

Stevan Pilipovic, Suzana Simic

摘要:

本文构造了一个序列${ϕ_i(\cdot-j)\mid j\in{\ZZ}, i=1,...,r}$,它构成加权移位不变空间[V^p_μ(Φ)= \Big{\sum\limits_{i=1}^r\sum\limits_{j\in{\mathbb{Z}}}c_i(j)ϕ_i(\cdot-j) \Big| {c_i(j)}_{j\in{\mathbb{Z}}}\in\ell^p_μ, i=1,...,r\Big},\in [1,\infty ]的$p$ -框架,并生成$L^p_μ(\mathbb{R})$的闭移位不变子空间.第一种构造是通过选择函数$ϕ_i$、$i=1,...,r$和完备傅立叶变换$\hatϕ_i$、$i=1,...,r$来获得的。第二种构造,紧支$ϕ_i,i=1,...,r,$给出Riesz基。

英文摘要:

We construct a sequence ${ϕ_i(\cdot-j)\mid j\in{\ZZ}, i=1,...,r}$ which constitutes a $p$-frame for the weighted shift-invariant space [V^p_μ(Φ)=\Big{\sum\limits_{i=1}^r\sum\limits_{j\in{\mathbb{Z}}}c_i(j)ϕ_i(\cdot-j) \Big| {c_i(j)}_{j\in{\mathbb{Z}}}\in\ell^p_μ, i=1,...,r\Big}, p\in[1,\infty],] and generates a closed shift-invariant subspace of $L^p_μ(\mathbb{R})$. The first construction is obtained by choosing functions $ϕ_i$, $i=1,...,r$, with compactly supported Fourier transforms $\hatϕ_i$, $i=1,...,r$. The second construction, with compactly supported $ϕ_i,i=1,...,r,$ gives the Riesz basis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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