数学物理学报(英文版) ›› 2014, Vol. 34 ›› Issue (3): 639-652.doi: 10.1016/S0252-9602(14)60036-9

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APPROXIMATE DUALITY OF g-FRAMES IN HILBERT SPACES

 Amir KHOSRAVI, Morteza MIRZAEE AZANDARYANI   

  1. Faculty of Mathematical Sciences and Computer, Kharazmi (Tarbiat Moallem) University, 599 Taleghani Ave., Tehran 15618, Iran; Faculty of Mathematical Sciences and Computer, Kharazmi (Tarbiat Moallem) University, 599 Taleghani Ave, Tehran 15618, Iran
  • 收稿日期:2012-06-19 修回日期:2013-07-23 出版日期:2014-05-20 发布日期:2014-05-20

APPROXIMATE DUALITY OF g-FRAMES IN HILBERT SPACES

 Amir KHOSRAVI, Morteza MIRZAEE AZANDARYANI   

  1. Faculty of Mathematical Sciences and Computer, Kharazmi (Tarbiat Moallem) University, 599 Taleghani Ave., Tehran 15618, Iran; Faculty of Mathematical Sciences and Computer, Kharazmi (Tarbiat Moallem) University, 599 Taleghani Ave, Tehran 15618, Iran
  • Received:2012-06-19 Revised:2013-07-23 Online:2014-05-20 Published:2014-05-20

摘要:

In this article, we introduce and characterize approximate duality for g-frames. We get some important properties and applications of approximate duals. We also obtain some new results in approximate duality of frames, and generalize some of the known results in approximate duality of frames to g-frames. We also get some results for fusion frames, and perturbation of approximately dual g-frames. We show that approximate duals are stable under small perturbations and they are useful for erasures and reconstruction.

关键词: Frame, g-frame, approximate duality, perturbation, reconstruction

Abstract:

In this article, we introduce and characterize approximate duality for g-frames. We get some important properties and applications of approximate duals. We also obtain some new results in approximate duality of frames, and generalize some of the known results in approximate duality of frames to g-frames. We also get some results for fusion frames, and perturbation of approximately dual g-frames. We show that approximate duals are stable under small perturbations and they are useful for erasures and reconstruction.

Key words: Frame, g-frame, approximate duality, perturbation, reconstruction

中图分类号: 

  • 41A58