Frames and non linear approximations in Hilbert spaces
- 作者: Poumai K.1, Kaushik S.1
-
隶属关系:
- University of Delhi
- 期: 卷 51, 编号 1 (2016)
- 页面: 41-49
- 栏目: Real and Complex Analysis
- URL: https://journals.rcsi.science/1068-3623/article/view/227888
- DOI: https://doi.org/10.3103/S1068362316010052
- ID: 227888
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详细
A simple proof of the proposition, stated in ([2], p. 346), asserting that in Hilbert spaces a Riesz basis is greedy, is given. Also, greedy approximant for frames in Hilbert spaces is defined and it is shown that frames satisfy the quasi greedy and almost greedy conditions. Finally, we give the characterizations of approximation spaces As(Ψ), Aqs(Ψ) by means of weak-lp and Lorentz sequence spaces for frames.
作者简介
K. Poumai
University of Delhi
编辑信件的主要联系方式.
Email: kholetim@yahoo.co.in
印度, Delhi
S. Kaushik
University of Delhi
Email: kholetim@yahoo.co.in
印度, Delhi