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Joint Similarities and Parameterizations for Dilations of Dual g-frame Pairs in Hilbert Spaces

摘要:In this paper, we give an operator parameterization for the set of dilations of a given pair of dual g-frames and the set of dilations of pairs of dual g-frames of a given g-frame. In particular,for the dilations of a given pair of dual g-frames, we introduce the concept of joint complementary g-frames and prove that the joint complementary g-frames of a pair of dual g-frames are unique in the sense of joint similarity, which then helps to obtain a sufficient condition such that the complementary g-frames of a g-frame are unique in the sense of similarity and show that the set of dilations of a given dual g-frame pair are parameterized by a set of invertible diagonal operators. For the dilations of pairs of dual g-frames, we prove that the set of dilations of pairs of dual g-frames are parameterized by a set of invertible upper triangular operators.

關鍵詞:
  • dual  
  • pair  
  • dilation  
  • basis  
  • joint  
  • similarity  
作者:
Xun; Xiang; GUO
單位:
Department; of; Mathematics; Southwestern; University; of; Finance; and; Economics; Chengdu; 611130; P.R.China
刊名:
數(shù)學學報

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期刊名稱:數(shù)學學報

數(shù)學學報緊跟學術前沿,緊貼讀者,國內刊號為:11-2038/O1。堅持指導性與實用性相結合的原則,創(chuàng)辦于1936年,雜志在全國同類期刊中發(fā)行數(shù)量名列前茅。