English

Construction of frames for shift-invariant spaces

Functional Analysis 2012-08-23 v2

Abstract

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

Keywords

Cite

@article{arxiv.1109.3285,
  title  = {Construction of frames for shift-invariant spaces},
  author = {Stevan Pilipovic and Suzana Simic},
  journal= {arXiv preprint arXiv:1109.3285},
  year   = {2012}
}
R2 v1 2026-06-21T19:05:10.701Z